问题
解答题
口算.
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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, |
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| 3.6×
| 8×1.36×1.25=13.6, | 7.2×2.8+2.8×0.8=22.4. |
口算.
|
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, |
| ||||||||||||||||||
|
|
| 3.6×
| 8×1.36×1.25=13.6, | 7.2×2.8+2.8×0.8=22.4. |