怎样算简便就怎样算.337-2980.8-0.2×1.9÷7.6713÷8+18×51367-(45-17)(4.9-3.9÷3)×134×3×(34+23).-数学
题文
怎样算简便就怎样算.
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答案
(1)337-298 =337-300+2, =37+2, =39; (2)0.8-0.2×1.9÷7.6 =0.8-0.38÷7.6. =0.8-0.05, =0.75; (3)
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题文
怎样算简便就怎样算.
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答案
(1)337-298 =337-300+2, =37+2, =39; (2)0.8-0.2×1.9÷7.6 =0.8-0.38÷7.6. =0.8-0.05, =0.75; (3)
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(4)
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