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Grade 2 · Math · Unit 7 of 13

Balance It

Make both sides equal

What your child practises

Finding the unknown number that makes both sides of an equation equal, using symbols for unknowns, and spotting number patterns.

Nunavut Curriculum approved guide: Alberta Mathematics K–9 (2007), Patterns and Relations · equality and inequality, and recording them with symbols

How we explain it

Children can open this short lesson before they practise.

  1. An equals sign means both sides have the same value.
  2. Work out one side first.
  3. Find the missing number that balances the sides.

Example: What number makes both sides equal? 5 + 4 = ☐ + 3 Left side: 5 + 4 = 9. 9 = ☐ + 3, so ☐ is 6. Answer: 6

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

    Look at the pattern: 16, 18, 20, 22, ?. What number comes next?

    • 30
    • 28
    • 24

  2. Question 2

    What number makes both sides equal?

    43 + 46 = 79 +

    • 10
    • 4
    • 16

  3. Question 3

    Which is equal to 98?

    • 57 + 40
    • 72 + 27
    • 57 + 41

  4. Question 4

    What number makes both sides equal?

    35 + 18 = 15 +

    • 35
    • 36
    • 38

  5. Question 5

    In ★ + 8 = 16, what number does ★ stand for?

    • 10
    • 2
    • 8

  6. Question 6

    In ★ + 9 = 12, what number does ★ stand for?

    • 9
    • 8
    • 3

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