早教吧作业答案频道 -->其他-->
脱式计算(能简算的要简算)(1)1.8×2.58+0.5+1.42×1.8(2)(54.7-17.5)×(0.45÷0.9)(3)52.91-311113-18213(4)15-8811+212.
题目详情
脱式计算(能简算的要简算)
(1)1.8×2.58+0.5+1.42×1.8
(2)(54.7-17.5)×(0.45÷0.9)
(3)52.91-31
-18
(4)15-8
+2
.
(1)1.8×2.58+0.5+1.42×1.8
(2)(54.7-17.5)×(0.45÷0.9)
(3)52.91-31
11 |
13 |
2 |
13 |
(4)15-8
8 |
11 |
1 |
2 |
▼优质解答
答案和解析
(1)1.8×2.58+0.5+1.42×1.8
=1.8×(2.58+0.5+1.42)
=1.8×4.5
=8.1
(2)(54.7-17.5)×(0.45÷0.9)
=37.2×0.5
=18.6
(3)52.91-31
-18
=52.91-(31
+18
)
=52.91-50
=2.91
(4)15-8
+2
=(15-8+2)-(
-
)
=9-
=8
=1.8×(2.58+0.5+1.42)
=1.8×4.5
=8.1
(2)(54.7-17.5)×(0.45÷0.9)
=37.2×0.5
=18.6
(3)52.91-31
11 |
13 |
2 |
13 |
=52.91-(31
11 |
13 |
2 |
13 |
=52.91-50
=2.91
(4)15-8
8 |
11 |
1 |
2 |
=(15-8+2)-(
8 |
11 |
1 |
2 |
=9-
5 |
22 |
=8
17 |
22 |
看了 脱式计算(能简算的要简算)(...的网友还看了以下:
计算下列各题,能用简便方法的要用简便方法9.9×9+9.9535-167-2358×11×1251 2020-04-07 …
能用简便方法计算就用简便方法计算①6.9×3.6-4.84÷0.4②4.75+8.4÷(9.2-6 2020-05-15 …
能用简便方法的用简便方法计算①12.5×32×2.5;②6.8×9.9;③9.16×2.5-0.5 2020-05-15 …
计算与解方程,能用简便方法计算用简便方法.17.5÷12.5×1.41.58×99+1.5826. 2020-05-17 …
能用简便方法计算的用简便方法计算.78-1.46+1.54;18.5-3.21-4.79;3.72 2020-06-11 …
能用简便方法计算的用简便方法计算.18.5-3.21-4.794.5×0.7+5.5×0.70.4 2020-06-11 …
拖式计算,能用简便方法计算用简便方法.17.5÷12.5×1.41.58×99+1.584.38÷ 2020-06-22 …
能用简便方法的用简便方法计算32+4.9-0.94.8-4.8×0.5(1.25-0.12能用简便 2020-07-18 …
两道解方程+两道递等式计算(1)2.5X+3X=320.4X+1.2*3=0.5X递等式计算(能简则 2020-11-26 …
计算下面各题,能简便计算的要简便计算.9分之24×11分之8-9分之2×11分之86又3分之2-(7 2020-12-17 …