分数乘除法简便运算100题(1)
分数乘除法简便运算100题
(1)(8
9+
4
27)×3 ×9 (2)(
3
8-
3
8)×
6
15
(3)1
6×(7 -
2
3)(4)
5
6×
5
9+
5
9×
1
6
(5)2
9×
3
4+
5
27×
3
4(6)
6
13×
7
5-
6
13×
2
5
(7)7
12×6 -
5
12×6 (8)
3
8
+
3
8
×
4
7
+
3
8
×
3
7
(9)37×3
35(10)
6
25× 24
(11)15
21
×
3
4
+
10
21
×
3
4
-
3
4
(12)
7
10
×101-
7
10
(13)8
9
×
8
9
—
8
9
×
8
9
(14)
3
5
× 99 +
3
5
(15)( 4
7
+
8
9
)×7 ×9 (16)3
4
5
×25
(17) 36×34
35
(18) (
5
6
-
5
9
)×
18
5
(19)262
3×
1
5
(20)32
2
5
×
5
6
(27)3
8
-
3
8
×
4
7
-
3
8
×
3
7
(28)
62
37
63?
(30)
2
29
×(15×
29
31
)(79)
39
14
37?
(80) 46×
45
44
(81) 2008×
20062007
(82) 47 ×1522 ×712 (83) 910 ×1317 +910 × 417
(84)36×937 (85)1113 -1113 ×13
33
(86) 257×101-257 (87)
9
5
739574?+?
(88) 59 × 34 +59 × 14 (89)17× 9
16
(91)4544×37 (92)2004×2003
67
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