试题 试卷
题型:填空题 题类:常考题 难易度:容易
乘法分配律(含用乘法分配律简算) 4909 10
46×(100-1)=
①635-35×14+86
②381+168÷(81-39)
③225×25-25×25
④6000÷8÷125
⑤99×50+50
⑥985-169-31
⑦189-57+111-43
⑧720÷[503-(203+255)]
20×30 0.2×0.3
=(2×10)×(3×10) =(2×0.1)×(3×0.1)
=(2×3)×(10×10) =(2×3)×(0.1×0.1)
=6×100 =6×0.01
=600 =0.06
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