题目内容
1.36×2.7+1.36×7.3 | 23×
|
1-(
| ||||||||||
456-25×4÷8 | 6.23-1.75-2.25 | 375×99. |
分析:(1)(2)(6)运用乘法分配律解答,
(3)(4)依据四则运算计算方法解答,
(5)依据减法的性质简算.
(3)(4)依据四则运算计算方法解答,
(5)依据减法的性质简算.
解答:
解:(1)1.36×2.7+1.36×7.3, =1.36×(2.7+7.3), =1.36×10, =13.6; (2)23×
=
=
=30; |
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(3)[1-(
=[1-
=
=
(4)456-25×4÷8, =456-100÷8, =456-12.5, =443.5; (5)6.23-1.75-2.25, =6.23-(1.75+2.25), =6.23-4, =2.23; (6)375×99, =375×(100-1), =37500-375, =37125. |
点评:本题主要考查学生对于四则混合运算计算方法的灵活应用,以及学生简算的能力.
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