四则混合运算题(含答案)
四则混合运算题(含答案)
1. 混合运算。
(800?600÷20)÷7018×(537?488)
132÷[(9+13)×2]28×[20?(3+15)]
2. 先说一说运算顺序,再计算。
570+35÷787?35×2
3. 列竖式计算。
437+263519?383+465871?283?94
4. 计算下面各题。
59+141×21720?624÷24540÷45×180
5. 脱式计算
950?460?90720÷(65?57)105×(5×2)
6. 请想清楚运算顺序两计算。
(1)(700?296)×4(2)35×6+26×8(3)94?87=7;84÷7=________ 请将上面的两个算式改成一个算式:________.
这个综合算式计算过程如下:_______ ________ ________.7. 比一比,算一算。
(1)720÷(18?12)÷2(2)(720÷18?12)÷2
(3)720÷(18?12÷2)(4)720÷(18?12)÷2]
8. 计算下面各题(能简算的才简算).
6.3?2.1×(3?1.5) 5.8×99+5.82
3
+7
9
×3
14
+1
6
5916÷58×1113
50
÷[1
2
×(6
5
?1
3
)]
9. 脱式计算。
6760÷13+17×25 4.82?5.2÷0.8×0.635÷7
8
×1?2
7
10. 脱式计算。
400?906÷3(27+53)×32167?(67?18)
11. 脱式计算。
108×3×3120×4÷6480÷2÷5792÷(3×3)
12. 脱式计算。
(507?486)×480×9?2402000×3+2960
参考答案
一、解答题
1.①(800?600÷20)÷70
=(800?30)÷70
=770÷70
=110
②18×(537?488)
=18×49
=882
③132÷[(9+13)×2]
=132÷[22×2]
=132÷44
=3
④28×[20?(3+15)]
=28×[20?18]
=28×2
=56
2.①570+35÷7
=570+5
=575
②87?35×2
=87?70
=17
3.(1)437+263=700
(2)519?383+465
=136+465
=601
(3)871?283?94
=588?94
=494
4.(1)59+141×21
=59+2961
=3020
(2)720?624÷24
=720?26
=694
(3)540÷45×180
=12×180
=2160
5.(1)950?460?90
=490?90
=400
(2)720÷(65?57)
=720÷8=90
(3)105×(5×2)
=105×10
=1050
6.(700?296)×4
=404÷4
=101
35×6+26×8
=210+208
=418
12,84÷(94?87),84÷(94?87),=84÷7,=12
7.720÷(18?12)÷2
=720÷6÷2
=120÷2
=60
(720÷18?12)÷2
=(40?12)÷2
=28÷2
=14
720÷(18?12÷2)
=720÷(18?6)
=720÷12
=60
720÷[(18?12)÷2]
=720÷[6÷2]
=720÷3
=240
8.①6.3?2.1×(3?1.5)
=6.3?2.1×1.5
=6.3?3.15
=3.15
②5.8×99+5.8
=5.8×(99+1)
=5.8×100
=580
③2
3
+7
9
×3
14
+1
6
=
2
+
1
+
1
=
2
3
+(
1
6
+
1
6
)
=
2
3
+
1
3
=1
④5916÷58×11=102×11
=(100+2)×11
=100×11+2×11=1100+22
=1122
⑤13
50÷[1
2
×(6
5
?1
3
)]
=13
50
÷[
1
2
×
13
15
]
=13
50
÷
13
30
=3 5
二、计算题
9.(1)6760÷13+17×25=520+425
=945;
(2)4.82?5.2÷0.8×0.6=4.82?6.5×0.6
=4.82?3.9
=0.92;
(3)35÷7
8×1?2
7
=40×1?2
7
=40?2
7
=395
7
.
10.(1)400?906÷3=400?302
=98
(2)(27+53)×32
=80×32
=2560
(3)167?(67?18)=167?67+18
=100+18
=118
11.(1)108×3×3
=324×3
=972
(2)120×4÷6
=480÷6
=80(3)480÷2÷5
=480÷(2×5)
=480÷10
=48
(4)792÷(3×3)
=792÷9
=88
12.(1)(507?486)×4=21×4
=84
(2)80×9?240
=720?240
=480
(3)2000×3+2960=6000+2960
=8960