Worksheets: adding and subtracting fractionsOperations on fractions and decimals · grades 4-6

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Answer key · group A · for the teacher · sheet no. 204 517

Adding and subtracting fractions

1.3140LCM(10, 8) = 40 ;910 − 18 = 3640 − 540 ;3640 − 540 = 3140

2.10 35LCM(10, 2) = 10 ;8 110 + 2 12 = 8 110 + 2 510 ;8 110 + 2 510 = 10 610 ;10 610 = 10 35

3.215 lLCM(3, 5) = 15 ;1 13 − 1 15 = 1 515 − 1 315 ;1 515 − 1 315 = 215

4.1 14LCM(2, 4) = 4 ;12 + 34 = 24 + 34 ;24 + 34 = 54 ;54 = 1 14

5.2 512LCM(4, 3) = 12 ;5 34 − 3 13 = 5 912 − 3 412 ;5 912 − 3 412 = 2 512

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Answer key

Quiz

Adding and subtracting fractions

GroupAB

Name Date Score / 13

1.Work out:45 − 79(2 pt)

2.Work out:4 25 + 8 23(2 pt)

3.Adam drank 2 23 l of juice and Julia drank 2 15 l. How much more juice did Adam drink?(2 pt)

4.Work out:23 + 35(2 pt)

Maths worksheets · phiboard.com

Group B

Quiz

Adding and subtracting fractions

GroupAB

Name Date Score / 13

1.Work out:910 − 18(2 pt)

2.Work out:8 110 + 2 12(2 pt)

3.Sophie drank 1 13 l of juice and Jacob drank 1 15 l. How much more juice did Sophie drink?(2 pt)

4.Work out:12 + 34(2 pt)

Maths worksheets · phiboard.com

Group A

Sheet settings

Quiz6 questions2 groups1 topic

Sheet no.204 517The number is only shown here and on the answer key - never on the student sheet. The same number with the same topics gives the same sheet.

answer key at the endall groups

Quiz

Adding and subtracting fractions

GroupAB

Name Date Score / 13

1.Work out:910 − 18(2 pt)

2.Work out:8 110 + 2 12(2 pt)

3.Sophie drank 1 13 l of juice and Jacob drank 1 15 l. How much more juice did Sophie drink?(2 pt)

4.Work out:12 + 34(2 pt)

5.Work out:5 34 − 3 13(3 pt)

6.Work out:34 − 16(2 pt)

Maths worksheets · phiboard.compage 10 of 10

Answer key · group A · for the teacher · sheet no. 204 517

Adding and subtracting fractions

1.3140LCM(10, 8) = 40 ;910 − 18 = 3640 − 540 ;3640 − 540 = 3140

2.10 35LCM(10, 2) = 10 ;8 110 + 2 12 = 8 110 + 2 510 ;8 110 + 2 510 = 10 610 ;10 610 = 10 35

3.215 lLCM(3, 5) = 15 ;1 13 − 1 15 = 1 515 − 1 315 ;1 515 − 1 315 = 215

4.1 14LCM(2, 4) = 4 ;12 + 34 = 24 + 34 ;24 + 34 = 54 ;54 = 1 14

5.2 512LCM(4, 3) = 12 ;5 34 − 3 13 = 5 912 − 3 412 ;5 912 − 3 412 = 2 512

6.712LCM(4, 6) = 12 ;34 − 16 = 912 − 212 ;912 − 212 = 712

The method lists the solution steps - handy when going through the sheet with the class.

Maths worksheets · phiboard.comsheet no. 999 999 · answer key, page 10 of 10

Quiz

Adding and subtracting fractions

GroupAB

Name Date Score / 13

1.Work out:45 − 79(2 pt)

2.Work out:4 25 + 8 23(2 pt)

3.Adam drank 2 23 l of juice and Julia drank 2 15 l. How much more juice did Adam drink?(2 pt)

4.Work out:23 + 35(2 pt)

5.Work out:8 15 − 3 12(3 pt)

6.Work out:59 − 12(2 pt)

Maths worksheets · phiboard.compage 10 of 10

Answer key · group B · for the teacher · sheet no. 204 517

Adding and subtracting fractions

1.145LCM(5, 9) = 45 ;45 − 79 = 3645 − 3545 ;3645 − 3545 = 145

2.13 115LCM(5, 3) = 15 ;4 25 + 8 23 = 4 615 + 8 1015 ;4 615 + 8 1015 = 12 1615 ;12 1615 = 13 115

3.715 lLCM(3, 5) = 15 ;2 23 − 2 15 = 2 1015 − 2 315 ;2 1015 − 2 315 = 715

4.1 415LCM(3, 5) = 15 ;23 + 35 = 1015 + 915 ;1015 + 915 = 1915 ;1915 = 1 415

5.4 710LCM(5, 2) = 10 ;8 15 − 3 12 = 8 210 − 3 510 ;8 210 = 7 1210 ;7 1210 − 3 510 = 4 710

6.118LCM(9, 2) = 18 ;59 − 12 = 1018 − 918 ;1018 − 918 = 118

The method lists the solution steps - handy when going through the sheet with the class.

Maths worksheets · phiboard.comsheet no. 999 999 · answer key, page 10 of 10

What goes on the sheet: adding and subtracting fractions

The generator draws questions from 5 question types in this topic. Every quiz group gets the same types in the same order, only with different numbers, and a practice sheet goes from easier to harder.

Adding - different denominators
Subtracting - different denominators
Adding - mixed numbers - different denominators
Subtracting - how much more - different denominators
Subtracting - mixed numbers - different denominators

What the section covers in the curriculum: adding, subtracting, multiplying and dividing fractions, mixed numbers and decimals, fraction of a number, squares and cubes of fractions, order of operations, word problems

Students can also practise online - the same question types, with step-by-step solutions: Exercises: adding and subtracting fractions →

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