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计算。24.7-11-91-0.125÷84×0.25+×16(2.5+3.6)×2+3.9×20.875×+0.125÷2-30%×0.2÷50%
题目详情
计算。 | |
24.7-11 -9 | 1-0.125÷ |
84×0.25+ ×16 | (2.5+3.6)×2 +3.9×2 |
0.875× +0.125÷2 | -30%×0.2÷50% |
▼优质解答
答案和解析
①24.7-11 -9 , =24.7-(11 +9 ), =24.7-20 , =4 ; ②1-0.125÷ , =1-0.125÷0.125, =1-1, =0; ③84×0.25+ ×16, =84×0.25+0.25×16, =0.25×(84+16), =0.25×100, =25; ④(2.5+3.6)×2 +3.9×2 , =2 ×(2.5+3.6+3.9), = ×10, =22.5; ⑤0.875× +0.125÷2, =0.875× +0.125× , = ×(0.875+0.125), = ×1, = ⑥ -30%×0.2÷50%, =0.5-0.3×0.2÷0.5, =0.5-0.12, =0.38 |
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