题目内容
脱式计算. 16×8÷16×8 |
480÷32-11 |
(618+22)÷20 | 376-18×19 |
752-52+48 | 375-(158-81) |
分析:(1)运用乘法交换律和结合律简算;
(2)先算除法,再算减法;
(3)先算小括号里面的加法,再算括号外的除法;
(4)先算除法,再算减法;
(5)按照从左到右的顺序计算;
(6)先算小括号里面的减法,再算括号外的减法.
(2)先算除法,再算减法;
(3)先算小括号里面的加法,再算括号外的除法;
(4)先算除法,再算减法;
(5)按照从左到右的顺序计算;
(6)先算小括号里面的减法,再算括号外的减法.
解答:解:(1)16×8÷16×8
=(16÷16)×(8×8)
=1×64
=64;
(2)480÷32-11
=15-11
=4;
(3)(618+22)÷20
=640÷20
=32;
(4)376-18×19
=376-342
=34;
(5)752-52+48
=700+48
=748;
(6)375-(158-81)
=375-77
=298.
=(16÷16)×(8×8)
=1×64
=64;
(2)480÷32-11
=15-11
=4;
(3)(618+22)÷20
=640÷20
=32;
(4)376-18×19
=376-342
=34;
(5)752-52+48
=700+48
=748;
(6)375-(158-81)
=375-77
=298.
点评:本题考查了简单的四则混合运算,计算时先理清楚运算顺序,根据运算顺序逐步求解即可.
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