分数计算题 ( 100 分)
一、分数与整数相乘。(每题 1 分;共 24 分)
5
6 11
12 × 4=
× 126 13 =
15 × 5=
× 8 = 5 ×=42
129
×=
46
16
× 15 =
2413
× =
2
28
×7=
5 48
21
4
7
25×9 × 15=
20 = 14 1018 × 12= 16
9
15 7× 30= 11 × 121=
14 × 21
16
9=
9 × 7=
27 × 54=
11
× 22 =
二、分数和分数相乘。(每题 1 分;共 18 分)
2
×3 = 6
×7 = 5 ×8 =
5 4 7 8 9
15
12 15
×=4 ×9 = 2 ×
15
=
25 16 5 10 3 16
4 ×27
14 ×25
20
=
= ×3
=
9 16 15 21 27 8 6 22
×17 ×
45
19 ×11 11 15 = 27 68 = 33
38 =
12 17
3 26 ×34 36 = 13 ×37 =
三、分数乘、加、减混合。 (每题 2 分;共 16 分)
7
50
2
4
15
5
3
×(-16 63 7 )
5 × 16 × 14 6 ×4 + 1
9 - 5 ×27 1- 18 × 38
6
×( 5-
5
)14 9 35
19
45
15 13
1 / 2
2
13 9× 6 =
× 11 = 44
3 × 20= 10
13 17× 51 =
3
=5× 11 14
15 × 20=
9
7 ×=11 15 7 ×5 = 8 21 7 ×18
= 9 35 8 17
×
17
20 =
2
5 4
+×3 12 15
19 × 7+ 8 91
13
四、分数乘、加、减简便运算。 (每题 2 分 ;共 42 分)
13
7
15 × 26 ×5 (
15 × 20 ×
1
16 21 5 5
4
( 6 - 9 ) × 36
6
7 7 × 12× 12 3
7
5 3 ×+8
12 12 × 8 53
× 57
56 1
8 5
3 × ( 3 -)
6
5
11 8 + 12 ) × 24
9 × 2 × 5 10
3
6
97
99×
98
8 4
3 ×15 × 7 16
5 7 7
4 ×
×17 9 +9 17
5
+5
× 16
17 17
1
9
(13+)×
9
13
2 / 2
9
17 ×14
18 × 14
5
× 22×
1
33 2
9 7
9
13 - 18 × 13
9 11
11 × 97× 9
12 7
25 × 15- 25 ×15
23 ×16
+16
×1
25
17
25
17
66 66 ×13 12+13
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