Let’s solve each problem one by one. Remember: when adding or subtracting fractions with the same denominator, you just add or subtract the numerators (top numbers) and keep the denominator (bottom number) the same.
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1) 2/5 + 1/5 = (2+1)/5 =
3/5
2) 3/6 - 2/6 = (3-2)/6 =
1/6
3) 2/7 + 4/7 = (2+4)/7 =
6/7
4) 1/8 + 2/8 = (1+2)/8 =
3/8
5) 3/5 - 1/5 = (3-1)/5 =
2/5
6) 5/10 - 4/10 = (5-4)/10 =
1/10
7) 2/9 + 3/9 = (2+3)/9 =
5/9
8) 6/11 - 3/11 = (6-3)/11 =
3/11
9) 9/20 - 2/20 = (9-2)/20 =
7/20
10) 1/7 + 4/7 = (1+4)/7 =
5/7
11) 8/20 + 3/20 = (8+3)/20 =
11/20
12) 8/12 - 3/12 = (8-3)/12 =
5/12
13) 4/15 + 7/15 = (4+7)/15 =
11/15
14) 11/25 - 7/25 = (11-7)/25 =
4/25
15) 7/11 - 3/11 = (7-3)/11 =
4/11
16) 4/13 + 5/13 = (4+5)/13 =
9/13
17) 9/25 - 9/25 = (9-9)/25 =
0/25 = 0
18) 13/25 + 6/25 = (13+6)/25 =
19/25
19) 5/14 + 4/14 = (5+4)/14 =
9/14
20) 11/13 - 9/13 = (11-9)/13 =
2/13
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Final Answer:
1) 3/5
2) 1/6
3) 6/7
4) 3/8
5) 2/5
6) 1/10
7) 5/9
8) 3/11
9) 7/20
10) 5/7
11) 11/20
12) 5/12
13) 11/15
14) 4/25
15) 4/11
16) 9/13
17) 0
18) 19/25
19) 9/14
20) 2/13
Parent Tip: Review the logic above to help your child master the concept of adding and subtracting fractions worksheet 4th grade.
