直接写得数4.6+2.4= 7.5﹣5= 0.6÷0.2= 2.5×0.4=4÷0.2= 4.2÷0.1= 9.2﹣1.2= 0.8×0.4=0.72÷8= 0.3×0.3= 0.12÷0.4= 0.4×100=
怎样算简便就怎样算. 4×28+56×28(125﹣70)×828×4×5 32×12547×99+47719×85﹣719×75.
简便计算 99+199+299+3125×32×25 156×l0l﹣156 5×99+55620÷(562×5)1300÷25÷4.
用简便方法计算 (1)2.46+8.67+7.36+10.33(2)8.78﹣3.25﹣1.75﹣1.78(3)4.28×99 (4)9.3×1.25×8(5)4.5×3.8+45×0.62.
用简便方法计算 (1)36+59+41+54(2)23×7+23×3(3)78×102(4)1462﹣369﹣631.
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