一年級數(shù)學(xué) 100以內(nèi)加減法口算練習(xí)題 （四）

一年級數(shù)學(xué) 100以內(nèi)加減法口算練習(xí)題 （四）一、 填空題(1-3每題 4分, 4-7每題 5分, 共 32分)1. (1)72( )2    (2) ( )4402. (1)( )2020   (2)  80( )83. (1) 40( )58   (2)  ( )2555二、 口算題(1-2每題 2分, 3-7每題 4分, 共 24分)1. (1)268 (2)379 (3)544 (4)7972. (1)546 (2)717 (3)264 (4)3753.  3157032574620817   435854063604.  585 548   5011 7075566463320 4385.  293  327  8733563220 247    48963306.63+5= 72+7=45+3=66+3=63+9=  72+9= 45+8=66+5=7.44+8=90-20= 47+9=49-20=9+57=  81+8=28+20= 59-50=8.  (1)8比37小多少？ (2)83和9相差多少？四、 應(yīng)用題(還剩多少只鴨子? 現(xiàn)在一共有多少只鴨子?)(1)河里有18只鴨子, 又游來5只鴨子._?(2) 原來有18只鴨子，游走了18只鴨子,._?2. 選擇合適的條件，分別把下列應(yīng)用題補(bǔ)充完整，再計算(30個女同學(xué)) (買上衣用去40元)(1) 合唱隊有32個男同學(xué)， 男同學(xué)比女同學(xué)多多少人？(2) 媽媽買上衣和褲子共用去79元， ，買褲子用去多少元？教學(xué)過程設(shè)計(一)口算(出示小黑板)1讀題直接說得數(shù)2將下列各題分為兩組(討論)3說一說每組題有什么共同之處4說一說你是怎樣算的？125=772=869=405=    653516139 324     307=987= 874=196=第1組：兩位數(shù)減一位數(shù)不退位減法，先算個位數(shù)減個位數(shù)，十位上的數(shù)不變第2組：兩位數(shù)減一位數(shù)退位減法，個位上的數(shù)不夠減，從十位上分出一個十當(dāng)10，用十幾減去幾，再把差和剩下的幾十合并起來第1列是20以內(nèi)的退位減法，可以想加算減，如：125=，想：幾加5得12，7加5得12，所以125=7第2列是整十?dāng)?shù)減一位數(shù)，第3列是兩位數(shù)減一位數(shù)，它們的共同之處都是個位上的數(shù)不夠減，可以簡縮思維過程，先用十幾減去幾等于幾，得數(shù)的十位數(shù)比被減數(shù)的十位數(shù)少1如： 324=，先算124=8，十位上的數(shù)比3少1是2，得數(shù)是28405=，先算105=5，十位上的數(shù)比4少1是3，得數(shù)是35306 505 302295 527 2012317 405 386251 549 419204 20252210131 15304081410538 4210339 516 2210(三)改錯(投影片)   下面的計算對嗎？把不對的改正過來564=42_ 379=22_778=69_ 407=43_(四)看誰做得又對又快(時間：2分)489= 475= 637=       528=  606= 414=       147=  938=       269=     386= 724= 802=      544=       148=   526=(五)想一想 65=1里填幾，得數(shù)的十位數(shù)不變？2里填幾，得數(shù)的十位數(shù)變了？附送：2019年一年級數(shù)學(xué) 20以內(nèi)加減法口算題1000道期末復(fù)習(xí)  班級：        姓名： 2+18=                   18-6=                   16-1=2+12=                   5+11=                   17-7=5+1=                    10-1=                   12+5=11-2=                   15+1=                   19-11=10+9=                   16-7=                   2+15=16-15=                  15+3=                   9-4=20-1=                   11-10=                  6+8=2+5=                    2+6=                    10+1=17-16=                  13+4=                   20-1=1+2=                    20-3=                   2+7=19-6=                   15-12=                  9+1=14-1=                   5+2=                    13+7=19-4=                   3+5=                    17+3=3+8=                    8+4=                    17+3=17+3=                   4+12=                   14+3=1+14=                   1+5=                    3+14=13-3=                   10+2=                   9-8=12-8=                   2+5=                    19-18=14+3=                   17-3=                   9-4=6+13=                   13+5=                   3+7=12+3=                   5+6=                    17-1=5+2=                    7+7=                    6+7=12-11=                  20-13=                  13+6=15-5=                   20-1=                   5+8=18-12=                  7+1=                    20-6=8+6=                    3+13=                   1+19=17-16=                  7+13=                   10-2=11+6=                   1+8=                    14+2=9+5=                    2+10=                   1+12=8+12=                   11-10=                  3+3=3+17=                   8+4=                    8+2=2-1=                    1+4=                    9+9=8+7=                    20-18=                  19-5=5+6=                    20-3=                   17-10=1+16=                   9+1=                    9+10=10-2=                   18-17=                  6+14=18-8=                   9+6=                    8-6=7-5=                    13+2=                   19-12=11+9=                   17-12=                  16-4=13-1=                   16-8=                   2+12=2+8=                    15-8=                   19-16=19-4=                   14+3=                   3+4=19-17=                  5-1=                    15+5=20-1=                   19-10=                  7-1=6-3=                    6+13=                   11-3=11+7=                   10+4=                   20-15=17-7=                   7-6=                    19-16=14+3=                   5+8=                    20-19=5+13=                   1+8=                    9+7=13-2=                   9-1=                    17-9=6-1=                    18-4=                   14-13=10-1=                   15-2=                   12-2=3+5=                    9+5=                    13-1=18-13=                  12+8=                   11+7=6+7=                    15-5=                   16-5=12-1=                   4+5=                    13+4=5-2=                    7-2=                    5+3=4+12=                   15+5=                   12+1=3+7=                    14-6=                   7+8=3+6=                    16-6=                   19-16=20-9=                   11-9=                   13-7=4+11=                   1+18=                   19-18=7+13=                   1+7=                    13+2=17-8=                   17-7=                   2+5=3-2=                    7+10=                   16-10=5+6=                    11-10=                  18-16=14-2=                   18-2=                   11+7=7+12=                   9-1=                    10-8=20-15=                  10-9=                   20-8=20-11=                  20-5=                   20-18=14+2=                   14-10=                  6+11=12+7=                   12-10=                  14+5=18-4=                   9+8=                    6+3=16-4=                   18-12=                  1+17=14+2=                   4+4=                    10-2=14-6=                   12-6=                   12+6=11-3=                   15+2=                   5+13=9+6=                    2+1=                    16-14=1+8=                    4+12=                   3+13=14-3=                   18-5=                   7+6=12+1=                   12-1=                   19-15=18-1=                   13-11=                  16+1=9-2=                    16-7=                   16-15=18-14=                  18-5=                   16+4=20-16=                  17-5=                   20-19=10-5=                   11-4=                   1+8=16-11=                  17-5=                   6+2=6+10=                   14-9=                   18-11=2+13=                   6+8=                    13-12=13-3=                   8+5=                    19-4=19-18=                  7-4=                    6+13=17-3=                   1+17=                   20-6=7-2=                    5-2=                    7+3=14-2=                   15+4=                   14-8=17-6=                   11-2=                   20-15=6+2=                    11-8=                   9-4=16-6=                   14+1=                   2+5=2+17=                   2+10=                   8+12=14+3=                   8-2=                    17+1=20-5=                  18-13=                  11-9=18-15=                  15-9=                   1+8=19-14=                  10+5=                   19-12=20-13=                  12-9=                   18-6=14-8=                   7+8=                    18-14=11-8=                   8-7=                    17+3=1+3=                    7-4=                    2+5=5-2=                    14-3=                   8+9=13-1=                   9+3=                    7+12=17-3=                   20-19=                  5-1=20-15=                  19-18=                  12+2=15-5=                   12-3=                   6+4=7+5=                    19-8=                   18-11=19-13=                  8+9=                    10-4=2+3=                    3+1=                    4+10=7+6=                    8+9=                    3+15=12-3=                   1+18=                   19-12=15-1=                   11+2=                   7+4=15-5=                   9-3=                    19-9=17+2=                   6+12=                   10+1=9+7=                    11-5=                   15-1=1+5=                    14+5=                   2+11=4+4=                    6-1=                    4+15=2+10=                   17-3=                   15+2=6-5=                    7+10=                   18+2=5+4=                    4+7=                    2+14=6+1=                    13-4=                   10-9=19-11=                  14+6=                   2+18=16-8=                   10-8=                   1+12=8+4=                    13+3=                   4-1=1+9=                    14-5=                   8+1=4+4=                    7+2=                    16-2=3+11=                   14-13=                  16+4=19-11=                  6+4=                    10+9=1+17=                   12+6=                   18-5=17-11=                  6-5=                    3+16=3+10=                   10-1=                   1+6=17-14=                  14+1=                   20-1=10-2=                   18-7=                   7+10=9-7=                    19-10=                  20-4=6+6=                    15-10=                  8+11=14-3=                   4+9=                    19-1=16+2=                   18-7=                   20-13=14-1=                   3+4=                    14-5=2+14=                   16-2=                   17-2=6+8=                    7+8=                    6+3=8-1=                    20-13=                  4-2=20-16=                  6+5=                    17-13=5+12=                   5+2=                    14+1=5+6=                    11-6=                   9-2=4+11=                   5+8=                    10+9=5+2=                    18-17=                  13-1=3+11=                   4+14=                   13-2=13-6=                   13-5=                   2+4=8+7=                    11+2=                   5+3=4+4=                    15-10=                  10-9=6-2=                    5+10=                   15-4=14-2=                   5+8=                    9+6=2+18=                   4-3=                    8-2=5+2=                    14-11=                  14+2=4+12=                   4+12=                   1+2=5+9=                    1+19=                   20-7=20-1=                   9-8=                    5+10=19-15=                  7+1=                    19-14=14-5=                   6+14=                   4+16=10-2=                   7-1=                    10-3=19-18=                  6-3=                    7+5=14+6=                   7+4=                    5+10=17-15=                  4+15=                   14-4=14-10=                  16-13=                  15-2=1+17=                   13-1=                   20-11=4+5=                    3+15=                   5+2=9-2=                    9-1=                    16-14=10-5=                   12+8=                   2+1=1+8=                    14-7=                   9+11=3+4=                    19-4=                   20-14=14+6=                   13+4=                   12-7=10+7=                   14+5=                   9+5=12+4=                   5+9=                    14-6=15+2=                   9+4=                    7+9=20-4=                   14-3=                   4+6=20-5=                   12-9=                   6+2=17+3=                   19-6=                   2+14=20-8=                   4+10=                   7+2=9-5=                    20-14=                  17-3=5+6=                    1+2=                    4+12=3+1=                    9+7=                    12-5=3+11=                   1+8=                    4+12=6-3=                    14-13=                  9+6=17-3=                   10+3=                   19-11=19-1=                   10-7=                   20-4=10+2=                   7+12=                   15-11=16-12=                  8+3=                    18-16=3+15=                   19-15=                  9+7=11-10=                  13-2=                   15-11=17+1=                   14-8=                   1+18=9+2=                    1+14=                   17-7=18-17=                  2-1=                    5+12=14-6=                   17-12=                  5+9=12+4=                   7+1=                    10-5=                    6+12=                   18-15=                  9+3=11-9=                   7+12=                   12+5=9+2=                    4+14=                   20-8=5+10=                   14-11=                  16-7=7+1=                    2+6=                    11-9=13-2=                   14-6=                   14+3=19-8=                   18-8=                   3+8=14-1=                   16+2=                   17+2=20-17=                  7+13=                   7-6=15-9=                   10+10=                  18-15=6-2=                    3+14=                   18-11=2+3=                    15-13=                  19-16=13-8=                   5+9=                    19-10=11-2=                   3-2=                    6-1=10-8=                   16-14=                  11-10=5+1=                    15-3=                   20-10=17-5=                   6+13=                   2+7=14-3=                   5+5=                    3+11=3+13=                   17-11=                  17-1=18-6=                   19-2=                   15+3=15-6=                   14-8=                   14-9=9+8=                    18+2=                   1+7=16-7=                   9+7=                    3+11=3+10=                   12+8=                   11+1=20-7=                   1+6=                    15+3=10-6=                   11+4=                   7+8=14+2=                   10+9=                   2+14=15-6=                   12-7=                   1+17=3+17=                   10+5=                   6+3=14-7=                   18-17=                  4+11=5-1=                    16-13=                  13+4=19-11=                  1+10=                   6+8=13+3=                   4+1=                    9+8=17-7=                   20-4=                   2+5=2+13=                   18-3=                   20-19=2+17=                   5+4=                    1+6=16-4=                   9+11=                   5-2=17-15=                  12+1=                   6+7=14-8=                   13-11=                  12-8=10-4=                   5+4=                    11+8=15-1=                   7+10=                   15-3=16-1=                   11-1=                   11+4=16-5=                   7+1=                    13-9=12+5=                   7+10=                   9-3=7+10=                   3+4=                    20-18=3+7=                    18-10=                  14-10=20-1=                   18-2=                   1+7=2+13=                   13+2=                   6+3=1+17=                   1+14=                   19-1=6+9=                    6-2=                    12-2=1+13=                   6-5=                    19-16=2+15=                   2+10=                   8+8=9+5=                    5+2=                    10+9=17-7=                   9+11=                   15-2=15-5=                   16-15=                  8-1=6+13=                   12+7=                   3+14=3+5=                    9+6=                    19-6=2+18=                   20-14=                  3+11=15-9=                   10+8=                   4+5=4+12=                   16-11=                  14-13=14+2=                   17-5=                   14-9=8+12=                   18-1=                   13+1=19-12=                  13-10=                  8-1=11+1=                   19-4=                   16-4=12+4=                   3+5=                    15+1=16-4=                   3+2=                    12-10=17-1=                   18-10=                  15-8=1+2=                    1+15=                   3+3=7+9=                    8-3=                    10+10=13-9=                   14+5=                   20-17=10-2=                   11-4=                   2+17=6+10=                   13+7=                   6+5=13-8=                   15+3=                   11-6=16-2=                   17-11=                  7+12=6+13=                   14-11=                  8+3=4+3=                    10+9=                   3+1=11-7=                   2+18=                   4+16=20-7=                   4-2=                    11-4=4+1=                    15-13=                  11-9=14-6=                   8+9=                    10-7=17-3=                   19-11=                  5+6=10+10=                  10+9=                   2+13=5+3=                    3+12=                   5+13=15+3=                   10-4=                   11+4=9+6=                    9+9=                    7+7=17-4=                   4+11=                   6-1=10+5=                   9+6=                    3+9=8-1=                    8+5=                    7+10=16-11=                  3+11=                   3+5=4+3=                    9-2=                    8+11=16-12=                  1+11=                   2+12=19-5=                   20-5=                   20-8=4-3=                    7+2=                    2+6=11+5=                   6+8=                    7-3=9+4=                    1+19=                   12-10=1+6=                    20-10=                  16-9=17-13=                  14-13=                  9+3=12+7=                   13+4=                   16-11=6+8=                    20-9=                   18-2=3+8=                    15-2=                   10+6=5+12=                   17+3=                   20-5=