=60
=60
=2
=80
=40
=4
=90
=30
=3
180÷30＝184÷
240÷40＝240÷
420÷60＝420÷
广州市三学
3200÷400＝6300÷6
课本第79
6
180
6
6
40
6
7
60
7
8
700
9
356÷49
350
50
7
366÷30
61÷19≈59÷
92÷28≈89÷
243÷39≈237÷
广州市三学
562÷68≈558÷
3
3
3
3
6
6
8
8
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