乘法:3.52×0.12 5.29×7.4 8.96×4.6 7.69×4.2
7.39×3.7 除法:15.9/3.8 19.92/2.6 19.5/2.6
16.36/4.8 53.55/8.3
梯等式:12.5×32×4 16×16+16×14 15×48×2 (4.2-2.8)/0.2 54.3+89.6+45.7
乘法:3.52×0.12 5.29×7.4 8.96×4.6 7.69×4.2
7.39×3.7 除法:15.9/3.8 19.92/2.6 19.5/2.6
16.36/4.8 53.55/8.3
梯等式:12.5×32×4 16×16+16×14 15×48×2 (4.2-2.8)/0.2 54.3+89.6+45.7