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怎样简便就怎样算 ① × + × ② ×( - ) ③24× ×9× ④30×( + ) ⑤51× ⑥ + ÷ 答案:① 710 × 16 + 310 × 16 =( 710 + 310 )× 16 =1× 16 = 16 ② 43 ×( 716 - 14 ) = 43 × 316 = 14 ③24× 59 ×9× 712 =(24× 712 )×( 59 ×9) =14×5 =70 ④30×( 16 + 45 ) =30× 16 +30× 45 =5+24 =29 ⑤51× 3350 =50× 3350 +1× 3350 =33+ 3350 =33 3350 ⑥ 25 + 35 ÷ 38 = 25 + 85 =2
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