题目内容
【题目】脱式计算(能简算的要简算)
24÷﹣56 (+)÷ ÷4× ×7×
98×+13×﹣ 98× 296÷.
【答案】(1)24÷﹣56
=72﹣56
=16
(2)(+)÷
=(+)×
=×+×
=+
=
(3)÷4×
=××
=
(4)×7×
=××7
=×7
=
(5)98×+13×﹣
=(98+13﹣1)×
=110×
=88
(6)98×
=(97+1)×
=97×+
=5+
=5
(7)296÷
=296×
=(295+1)×
=295×+
=3+
=3
【解析】
试题分析:(1)先算除法,再算减法;
(2)将除法变为乘法,再根据乘法分配律计算;
(3)将除法变为乘法,再约分计算即可求解;
(4)约分计算即可求解;
(5)98×+13×﹣根据乘法分配律计算;
(6)98×根据乘法分配律计算;
(7)296÷先将除法变为乘法,再根据乘法分配律计算.
解:(1)24÷﹣56
=72﹣56
=16
(2)(+)÷
=(+)×
=×+×
=+
=
(3)÷4×
=××
=
(4)×7×
=××7
=×7
=
(5)98×+13×﹣
=(98+13﹣1)×
=110×
=88
(6)98×
=(97+1)×
=97×+
=5+
=5
(7)296÷
=296×
=(295+1)×
=295×+
=3+
=3
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