0.25×0.7÷0.25×0.7 19.44÷2.7+6.08 9.3÷0.31÷0.3 10
0.25×0.7÷0.25×0.719.44÷2.7+6.089.3÷0.31÷0.326-1.92÷0.12能简算的要简算...
0.25×0.7÷0.25×0.7
19.44÷2.7+6.08
9.3÷0.31÷0.326-1.92÷0.12
能简算的要简算 展开
19.44÷2.7+6.08
9.3÷0.31÷0.326-1.92÷0.12
能简算的要简算 展开
2个回答
展开全部
(1)0.25×0.7÷0.25×0.7=0.25÷0.25×0.7×0.7=1×0.49=0.49
(2)19.44÷2.7+6.08=(19.44÷3)÷(2.7÷3)+6.08=6.48÷0.9+6.08=(6.48÷0.3)÷(0.9÷0.3)+6.08=21.6÷3+6.08=7.2+6.08=13.28
(3)9.3÷0.31÷0.326-1.92÷0.12=30÷0.326-1.92÷0.12=30000÷326-16≈92.02-16=76.02
(2)19.44÷2.7+6.08=(19.44÷3)÷(2.7÷3)+6.08=6.48÷0.9+6.08=(6.48÷0.3)÷(0.9÷0.3)+6.08=21.6÷3+6.08=7.2+6.08=13.28
(3)9.3÷0.31÷0.326-1.92÷0.12=30÷0.326-1.92÷0.12=30000÷326-16≈92.02-16=76.02
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