四年级脱式计算100道带答案 40道脱式计算
40道脱式计算
40道脱式计算
178×101-178
84×36+64×84
75×99+2×75
83×102-83×2
98×199
123×18-123×3+85×123
50×(34×4)×3
25×(24+16)
178×99+178
79×42+79+79×57
840÷40-400÷40脱式计算
840÷40-400÷40
=21-10
=11
,
你好,本题已解答,如果满意
请点右下角“采纳答案”。
脱式计算40+360&40-20
不知道&表示是什么数学运算符号,以除号为例,计算如下:
40+360÷40-20
解:
40+360÷40-20
=40+9-20
=29
0.25×0.75×40脱式计算
0.25×0.75×40
=0.25×40×0.75
=10×0.75
=7.5
脱式计算6.25-40÷
(1)6.25-40÷16×2.5,=6.25-2.5×2.5,
=6.25-6.25,
=0;(2)1.8×0.2+2.2×25%,
=0.36+0.55,
=0.91;
(3)2700×(506-499)÷900,
=2700×7÷900,
=18900÷900,
=21;
(4)33.02-(148.4-90.85)÷2.5,
=33.02-57.55÷2.5,
=33.02-23.02,
=10;
(5)18.1÷(3-0.299+0.23)×1,
=18.1÷(2.701+0.23)×1,
=18.1÷2.931×1,
=
×1,
=
.
0.25*6.5*40脱式计算
原式
=0.25×40×6.5
=10×6.5
=65
脱式计算280÷(7十40)
280÷(7+40)
=280÷47
≈5.957
脱式计算. 6.25-40÷16
(1)6.25-40÷16×2.5,
=6.25-2.5×2.5,
=6.25-6.25,
=0;
(2)
1 12+(4
5 12-3
1 2)÷
11 24,
=
+
11 12÷
11 24,
=
+2,
=2
;
(3)[
3 5-(
3 4?
2 5)]÷4,
=[
+
2 5-
3 4]÷4,
=(1-
)÷4,
=
÷4,
=
;
(4)[0.8×(
3 5+
27 10×
8 9)]÷30%,
=[0.8×(
+
27 10×
8 9)]÷30%,
=[0.8×(
+
12 5)]÷30%,
=[0.8×3]÷30%,
=2.4÷0.3,
=8.
40×12-240脱式计算
40×12-240脱式计算
解:直接运算最简便
原式=480-240
=240
脱式计算①6.25-40÷16
①6.25-40÷16×2.5,
=6.25-2.5×2.5,
=6.25-6.25,
=0;
②
1 12+(4
5 12-3
1 2)÷

11 24
,
=
+
11 12÷
11 24,
=
+2,
=2
.