(1)7.85÷0.25×6.48 (2)6.7+19.34﹣3.63÷0.6 (3)0.24×[151﹣(53.2﹣2.2)÷0.5...
(1)7.85÷0.25×6.48(2)6.7+19.34﹣3.63÷0.6(3)0.24×[151﹣(53.2﹣2.2)÷0.51](4)7.38÷[4.6+1.2×(...
(1)7.85÷0.25×6.48 (2)6.7+19.34﹣3.63÷0.6 (3)0.24×[151﹣(53.2﹣2.2)÷0.51] (4)7.38÷[4.6+1.2×(7.1﹣4.1)]
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(1)7.85÷0.25×6.48 =31.4×6.48 =203.472 | (2)6.7+19.34﹣3.63÷0.6 =6.7+19.34﹣6.05 =26.04﹣6.05 =19.99 |
(3)0.24×[151﹣(53.2﹣2.2)÷0.51] =0.24×[151﹣51÷0.51] =0.24×[151﹣100] =0.24×(50+1) =0.24×50+0.24×1 =12+0.24 =12.24 | (4)7.38÷[4.6+1.2×(7.1﹣4.1)] |
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