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Number Equation Solutions

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Number Equation Solutions

Solve each number equation by finding values that make both sides equal. Some questions have more than one answer. Show how you know your solutions work.

1.The equation is 8 + 4 = 7 + 5. Explain why both sides are equal.

Warm-up: find the missing number

Use addition and subtraction to keep both sides of each equation equal.

2.The snack stall has 18 apples. Complete the equation: 18 + 7 = 20 + .

3.Choose the value of □ that makes 36 + 14 = □ + 10 true.

4.Complete the equation with a number: 42 + 8 = 30 + ___.

Find more than one solution

A number equation can have several pairs of answers. Check each pair by working out both sides.

5.The two blanks must add to 20: 16 + 9 = ___ + ___ + 5. Write one pair of whole numbers that works.

6.Find a different pair of whole numbers for 16 + 9 = ___ + ___ + 5. How can you check your pair?

7.True or false? In 27 + 13 = 30 + 10, both sides have the same total. Explain your choice.

8.Put these totals in order from smallest to largest on the number line: 18 + 4, 30 − 5, and 12 + 9. Label each point with its matching calculation.

9.A team is solving 48 + 12 = ___ + ___. Give two different pairs of whole numbers that make the equation true.

10.Create your own true equation using two addition signs, such as ___ + ___ = ___ + ___. Fill in all four numbers and show that both sides have the same total.