-1.3×2/3+0.34×2/7+1/3×(-1.3)+1又5/7×0.34用有理数的简算
1个回答
-13*2/3+0.34*2/7+1/3*(-13)+5/7*0.34
= -13*(2/3+1/3)+0.34*(2/7+5/7)
= -13+0.34
= -12.66
相关问题
-13×2/3-0.34×2/7+1/3×(-13)-5/7×0.34
计算:-13×[2/3]-0.34×[2/7]+[1/3]×(-13)-[5/7]×0.34.
计算:-13×[2/3]-0.34×[2/7]+[1/3]×(-13)-[5/7]×0.34.
简算1.34.5×9.23-34.5+1.77×34.52.7.0875-4又2/3×0.72+57/64÷2.853.
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-13×3分之2-0.34×7分之2+3分之1×(-13)-7分之5×0.34
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3/8×2/7+5×3×1/8×1/7=?(必须要简算)