计算.(1)956×4.25+414×16(2)[22.5+(335+1.8-1.21×511)]÷40%(3)310×38+115×716+15×312(4)718×92+161313-154×165.-数学
题文
计算. (1)9
(2)[22.5+(3
(3)
(4)
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答案
(1)9
=(9
=10×4.25, =42.5; (2)[22.5+(3
=[22.5+(3.6+1.8-0.55)]÷40%, =[22.5+(5.4-0.55)]÷40%, =[22.5+4.85]÷0.4, =27.35÷0.4, =68.375; (3)
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