
计算各题,能简算的要简算. 3.4×12.5×0.08 5.4×2.8+7.2
计算各题,能简算的要简算.3.4×12.5×0.085.4×2.8+7.2×5.48.8÷0.4÷28.7×9.9....
计算各题,能简算的要简算. 3.4×12.5×0.08 5.4×2.8+7.2×5.4 8.8÷0.4÷2 8.7×9.9.
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(1)3.4×12.5×0.08, =3.4×(12.5×0.08), =3.4×1, =3.4; (2)5.4×2.8+7.2×5.4, =5.4×(2.8+7.2), =5.4×10, =54; (3)8.8÷0.4÷2, =8.8÷(0.4×2), =8.8÷0.8, =11; (4)8.7×9.9, =8.7×(10-0.1), =8.7×10-8.7×0.1, =87-0.87, =86.13. |
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