A.0 | B.3 | C.6 |
A.6 | B.6.25 | C.7 |
A.3.96 | B.3.6 | C.4.4 | D.39.6 |
A.变大了 | B.变小了 | C.不变 |
A.3.9×5×2=3.9×(5×2) | B.0.32÷0.25=(0.32×4)÷(0.25×4) |
C.0.24×25=0.6×(4×25) | D.4.8×2.5=(4.8÷4)×(2.5×4) |
A.A | B.B | C.C | D.D |
A.2 | B.0.2 | C.20 | D.0.02 |
A.8.2÷1 | B.8.2÷0.1 | C.8.2÷0.01 | D.0.82÷0.1 |
A.小林每小时走6千米,2.5小时行多少千米? |
B.李阿姨去超市买苹果,每千克6元,买了2.5千克,一共花了多少元? |
C.用一根6米长的绳子做跳绳,每根跳绳长2.5米,可以做几根? |
D.一个长方形的长是6分米,宽是2.5分米,面积是多少平方分米? |
A.0.83×1 | B.0.83÷1 | C.1÷0.83 |