列式计算：（1）210被7除是多少？（2）30除一个数，商和余数都是2，求这个数．
直接写出得数+=﹣= 0÷6= 39×= 15﹣= 1÷= 21÷=（+）×6=×÷×= 8×﹣=
直接写出得数．========
口算．== 5﹣== 0×1= 1÷===
直接写得数．========
直接写得数+=÷7=×=÷=×8= 9÷= 15×=﹣=÷=×=×=÷=
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﹣
= 0÷6
= 39×
= 15﹣
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= 21÷
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÷
×
﹣
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= 5﹣
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= 1÷
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÷7=
×
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÷
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×8= 9÷
= 15×
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﹣
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÷
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