递等式计算
(1÷0.5+0.5÷1)×2.4 12.5×3.2×2.5
45.19-4.8+54.81+5.2 14.5×3.6-145+6.5×14.5
(1÷0.5+0.5÷1)×2.4 12.5×3.2×2.5
45.19-4.8+54.81+5.2 14.5×3.6-145+6.5×14.5
脱式计算,能简算的要简算.
25×280 4000÷125÷8 186×345-345×86
52.3-3.59-1.41 137×99+137 276-(176-98)
25×280 4000÷125÷8 186×345-345×86
52.3-3.59-1.41 137×99+137 276-(176-98)
递等式计算,能简便运算的要简便运算。
47.5÷(2.5×0.475)
0.25×0.32×1.25
(8.25﹣7
)÷(2.7﹣2.66)
15.5﹣15.5×1.5÷15.5×1.5
6.25×7.4+0.26×62.5﹣6
47.5÷(2.5×0.475)
0.25×0.32×1.25
(8.25﹣7

15.5﹣15.5×1.5÷15.5×1.5
6.25×7.4+0.26×62.5﹣6
