A.3.2×4.6=14.72 | B.0.32×4.6=14.72 | C.1.472÷3.2=0.46 | D.147.2÷3.2=46 |
A.1.29×5.4 | B.0.129×5.4 | C.12.9×0.54 |
A.56×9.7 | B.56×0.097 | C.0.56×97 | D.560×0.97 |
A.6×9 | B.6×10 | C.7×9 |
A.7.25×1.01 | B.725×1.01 | C.0.725×101 |
A.0.065×150 | B.6.5×15 | C.6.5×1.5 | D.0.65×1500 |
A.0.375×0.16 | B.37.5×16 | C.37.5×0.16 | D.375×0.16 |
A.7.5×2×19 | B.75×40-2 | C.7.5×40-7.5×2 |
A.乘法交换律 | B.乘法结合律 | C.乘法分配律 | D.乘法交换律和结合律 |
A.5.15 | B.51.5 | C.0.515 |