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2
-(1
2
2
5
-3-4
35
6
5 1
0.75+8 +4 +0.375
12 5 7 +2 5 )
17.15- 8.47- 1.53
17 6 4
5 -(2 - 1
4.25 -3 6 6 4 )
1 3
4 4 4 4 4
5 + 95 +995 +9995 +99995
25×( 37×8) 25× 32× 125
1
400÷ 125÷ 8
5 ×
3
125× 8.8 0.125× 0.25× 32
25× 3 ÷ 2 10
3
5 3 1 3
11 + 7 12
5
7 4
318 × 7213 ÷ 318 34 × (58 - 5.375)(
18 + 24 )× 72
45× (9 +15 - 0.6)
2
187.7× 11- 187.7
3
+ 11 )× 15× 11
5 1
0.625× 0.5+8 +2 × 62.5%
3.4×99+ 3.4
(
15
?
7
+ ÷2
1 5
5 2
×
43
7 1
+ 57.125 × - 0.5 ×
1 2
2.42 ÷
3
4
+4.58 ×-4÷ 3
1
1
3
9 11 9 8 2
3
1 1
7
1 7
7 ÷ 11 2 ×
5
22× 4
+25× 75%-7× 0.75
0.25× 63.5- 4 × 132
6
15
×2.5 —22 ×415
+
9 5 9 11
7 14 5 4
7 3
1 7
+1.25 × 24
11 × 419 +519 ÷ 17
+
11
897× 8 - 37.5%+104× 0.375
3.5× 1 410 +3.8÷
5
0.125×3 1 + × 8.25+12.5%
18×9+ 7×9+9 1
×58+ 1
×41+
1
4 8
25
16
25
16
16
8
8
8
3 x
+ 1
x =2.25
2x - 1.6=5.4
20%x +
3
=4
1 x
+ 2
x
4
2
4
5
3
=26
20 - 15% x = 5
3 x ÷
1 =18
3 - 2x =
3
x - 75%x =
5
4
6
5
2
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