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口算. 800-250=30×40=8100÷900=10-0.98=105÷7=560+7

2022-08-13 23:50:14 问答库 阅读 199 次

问题详情

口算. 800-250=30×40=8100÷900=10-0.98=105÷7=560+770=

0.25×0.4=6.3÷0.07=0.64÷8=8.85×10=4.73+0.7=3

9

+7

9

=

5

8

×4

10

=5

6

÷3
=5

8

-1

2

=3.6×1

4

=8×1.36×1.25=7.2×2.8+2.8×0.8=

参考答案

800-250=550,30×40=1200,8100÷900=9,10-0.98=9.02,105÷7=15,560+770=1330,0.25×0.4=0.1,6.3÷0.07=90,0.64÷8=0.08,8.85×10=88.5,4.73+0.7=5.43,39+79=10958×410=1456÷3=51858-12=18,3.6×14=0.9,8×1.36×1.25=13.6,7.2×2.8+2.8×0.8=22.4.

考点:口算