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Equation Answer Key

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Equation Answer Key

A market stall has lost the answers to its number puzzles! Solve each equation to help find them. A box □ stands for a number. You can use the number lines, count on, or use the opposite operation.

Find the missing number

Work out what each box must be.

1.The fruit basket has 4 apples. Anh adds some more, and now there are 9. Solve: 4 + □ = 9.

2.There are 12 oranges. The stall sells some. Solve: 12 − □ = 7. What number belongs in the box?

3.A tray has 3 rows of muffins, with 4 muffins in each row. Choose the equation that shows the total number of muffins.

3 + 4 = 7
3 × 4 = 12
12 − 4 = 3

4.The baker packs 15 biscuits equally into 3 bags. Solve: 15 ÷ 3 = □.

Use the clues

Read each market clue carefully. Show how you know.

5.Kirra has 6 bunches of carrots. Each bunch has 2 carrots. Complete the equation and find how many carrots there are: 6 × 2 = □.

6.A customer pays $10 for a snack that costs $6. Solve the equation to find the change: 6 + □ = 10.

7.True or false? In the equation 8 + □ = 13, the missing number is 6. Explain how you checked.

8.A fruit box contains 14 pears. Some are sold, and 8 remain. Write an equation with a box for the number sold, then solve it.

9.The stall has 4 paper bags with 5 apples in each bag. Write a multiplication equation for the apples, then write a division equation that checks your answer.

10.Make your own market puzzle using a box for a missing number. Use addition or subtraction, and write the answer too.