A-A+
脱式计算(能用简便方法的用简便方法计算)[(716-14)+1516]÷126134-15.
问题详情
脱式计算(能用简便方法的用简便方法计算)
[(
61
23-
5.8×99-4.2
10.6-(6.3+0.125÷12.5%)
参考答案
(1)[(716-14)+1516]÷12,
=[316+1516]÷12,
=1816÷12,
=2.25;
(2)6134-15.37+3814-34.63,
=(6134+3814)-(15.37+34.63),
=100-50,
=50;
(3)23-89×38÷127,
=23-39÷127,
=23-9,
=14;
(4)5.8×99-4.2,
=5.8×(100-1)-4.2,
=580-5.8-4.2,
=580-(5.8+4.2),
=580-10,
=570;
(5)10.6-(6.3+0.125÷12.5%),
=10.6-(6.3+1),
=10.6-7.3,
=3.3.
考点:方法