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7th grade · Math · Unit 8 of 18

Fractions

Add, subtract, multiply, divide

What your child practices

Adding and subtracting fractions with different denominators, and multiplying and dividing a fraction by a fraction.

Alabama Course of Study content standard: 7.4; 7.5 · adding, subtracting, multiplying and dividing fractions

How we explain it

Children can open this short lesson before they practice.

  1. To add or subtract, rename the fractions with a common denominator.
  2. To multiply, multiply the tops and multiply the bottoms.
  3. To divide, multiply by the reciprocal (flip the second fraction).

Example: 2/3 ÷ 1/6 = ? Flip 1/6 to 6/1 and multiply. 2/3 × 6 = 12/3. 12/3 = 4. Answer: 4

Fractions in Alabama

In the Alabama Course of Study, this is unit 8 of 18 in 7th grade Math, after Probability and before Percents & Proportions.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Alabama State Department of Education (ALSDE)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    What is 1/2 + 3/5?

    1/2 + 3/5

    • 1 1/5
    • 4/7
    • 1 1/10

  2. Question 2

    What is 1/2 × 1/4?

    1/2 × 1/4

    • 1/6
    • 1/3
    • 1/8

  3. Question 3

    What is 3/4 × 6/8?

    3/4 × 6/8

    • 3/4
    • 9/16
    • 1 1/2

  4. Question 4

    What is 1/2 − 2/5?

    1/2 − 2/5

    • 1/10
    • 1/3
    • 1/5

  5. Question 5

    What is 3/4 − 1/9?

    3/4 − 1/9

    • 2/5
    • 23/36
    • 2/3

  6. Question 6

    What is 3/4 ÷ 1/5?

    3/4 ÷ 1/5

    • 4/15
    • 3 3/4
    • 3/20

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