Fractions: add/sub different denominator
Number
|
Problem
|
Answer in fractions
|
Answer in mixed numerals
|
1
|
½ + ¼ =
|
6/8
| |
2
|
⅓ + ¼ =
|
7/12
| |
3
|
⅙ + ⅛ =
|
14/48
| |
4
|
⅕ + ¼ =
|
9/20
| |
5
|
⅔ + ⅕ =
|
13/15
| |
6
|
⅚ + 1/7 =
|
41/42
| |
7
|
⅖ + ⅜ =
|
23/40
| |
8
|
2/3 + ⅚ =
|
27/18
|
1 9/18
|
9
|
¾ + 6/8 =
|
48/32
|
1 16/32
|
10
|
4/7 + ¾ =
|
37/28
|
1 9/28
|
11
|
7/9 + 6/7 =
|
112/63
|
1 49/63
|
12
|
⅝ + ⅚ =
|
70/48
|
1 22/48
|
13
|
3/9 + ¾ =
|
39/36
|
1 3/36
|
14
|
8/5 + 3/7 =
|
71/35
|
3 1/35
|
15
|
9/4 + 8/10 =
|
122/40
|
3 2/40
|
Number
|
Problem
|
Answer in fractions
|
Answer in mixed numerals
|
1
|
⅞ - 2/3
|
5/24
| |
2
|
⅘ - 1/4
|
11/20
| |
3
|
7/6 - 2/5
|
23/30
| |
4
|
4/3 - 2/7
|
22/21
|
1 1/21
|
5
|
7/9 - 4/6
|
14/54
| |
6
|
3/7 - 3/8
|
3/56
| |
7
|
7/10 - 2/6
|
24/60
| |
8
|
7/4 - 2/9
|
43/90
|
1 19/36
|
9
|
10/11 - 3/4
|
7/44
| |
10
|
6/12 - 1/4
|
12/48
| |
11
|
4/9 - 5/12
|
3/108
| |
12
|
17/20 - 7/10
|
30/300
| |
13
|
8/14 - 3/21
|
126/294
| |
14
|
32/40 - 7/20
|
360/800
| |
15
|
15/4 - 17/28
|
352/112
|
3 16/112
|
LI: to add and subtract fractions of the same size unit
Today I made a poster of equivalent fractions. It was really fun making it. We also practised adding and subtracting fractions that have different denominator.
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