一、竖式计算,不能除尽保留2位有效小数 4.5+5.67 46.3-2.42 56.25-16.4 3.375+2.128 40-1.77 12.4+6.06 101.5÷29 5.14×65 4.6×1.02 7.545÷0.15 2.4÷0.25 78.78÷78 9÷2.6 6.432÷3.2 15÷2.3 6.9×0.016 X÷5=0.016 4.2X=4.284 15.6+X=27 X-3.5=4.05 二、能简算的要简算。 10-(1.67+3.3) 12.83-3.42+0.27-5.48 11.83+6.94-5.38 4.29+6.31-4.29+6.31 11.56-(8.56+0.67) 4.63+2.05-1.98 74.9÷0.25÷4 3.84×38.4+3.84×61.6 5-7.14÷3.5×16 (3-0.125)×8 2.5×[(0.9+1.8)÷4.5] 98.5×10.1 0.25×4÷0.25×4 2.16+2.16×99 4.2×26+0.42×740 5.4×1.25×0.5×0.8 2.5+7.5×(3.64-1.24) 3.9÷(1.3×5) 46.2-46.2÷4×0.25 5.4×0.99 0.8×(1.25+12.5) 0.8×3.2×1.25 (16×0.5+3.2)÷5 9-7÷2.5×4 5.5×[0.672÷(2+2.2)] 3.7×4.5-4.4×3.7 2.5×12.5×0.4×8 6.5×2.02 22.8-(6+9.728÷3.2) 0.8×[(10-0.34)×0.25] 25.4×4.8-0.65÷2.6 3.8÷1.25÷0.8 三、分数加减法运算 |
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