题目内容

①6.5×8+3.5×8-44②907+907×9③(999+111)÷[56×(
3
7
-
3
8
)]
④56×99⑤168.1÷(4.3×2-0.4)⑥[2-(11.9-8.4×1
1
3
)]÷1.3.
①6.5×8+3.5×8-44
=(6.5+3.5)×8-44
=10×8-44
=80-44
=36;
②907+907×9
=907×(1+9)
=907×10
=9070;
③(999+111)÷[56×(
3
7
-
3
8
)]
=1110÷[56×
3
56
]
=1110÷3
=370;
④56×99
=56×(100-1)
=56×100-56×1
=5600-56
=5544;
⑤168.1÷(4.3×2-0.4)
=168.1÷(8.6-0.4)
=168.1÷8.2
=20.5;
⑥[2-(11.9-8.4×1
1
3
)]÷1.3
=[2-(11.9-
42
5
×
4
3
)]÷1.3
=[2-(11.9-11.2)]÷1.3
=[2-0.7]÷1.3
=1.3÷1.3
=1.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网