一、口算。
$630÷63= $
$140 - 70= $
$12×50= $
$180÷90= $
$105×8= $
$500÷25= $
$112÷8= $
$72÷18= $
$630÷63= $
10
$720÷24= $30
$9×500= $4500
$140 - 70= $
70
$130×7= $910
$150÷5= $30
$12×50= $
600
$540÷27= $20
$96÷24= $4
$180÷90= $
2
$91 - 49= $42
$940÷20= $47
$105×8= $
840
$230×5= $1150
$65×20= $1300
$500÷25= $
20
$360÷18= $20
$9600÷800= $12
$112÷8= $
14
$81×9= $729
$60×12= $720
$72÷18= $
4
$437 - 149= $288
$155 + 155= $310
答案
一、10 30 4500
70 910 30
600 20 4
2 42 47
840 1150 1300
20 20 12
14 729 720
4 288 310
70 910 30
600 20 4
2 42 47
840 1150 1300
20 20 12
14 729 720
4 288 310
二、用竖式计算。
$312÷52$ $562÷31$ $657÷85$
$126÷28$ $259÷37$ $204÷43$
$312÷52$ $562÷31$ $657÷85$
$126÷28$ $259÷37$ $204÷43$
答案
二、6
18……4
7……62
4······14
7
4······32
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