The Equal Sign and Word Problems: Grade 1 Math Worksheet Answer Key – PDF Download

Grade 1 Equations Worksheet Answer Key: problems 1–5

Problem 1: Does the scale balance?

The scale shows \(3 + 4 = 7\). The left side is \(3 + 4\), which is 7. The right side is 7. Both sides match, and the scale is level.

The equation is true.

Problem 2: A scale that tips

The scale shows \(6 = 4 + 1\). The left side is 6. The right side is \(4 + 1 = 5\). Since \(6\) is not the same as 5, the scale tips to the left.

The equation is false.

Problem 3: True or false

1. Both sides are 6. True.
2. Left side \(5 + 2 = 7\), right side 7. True.
3. Left side 9. Right side \(3 + 5 = 8\). False.
4. Left side 10. Right side \(6 + 4 = 10\). True.

Problem 4: Both sides

1. \(4 + 4 = 8\) and \(5 + 3 = 8\). True.
2. \(10 – 2 = 8\) and \(6 + 3 = 9\). False.
3. \(7 + 0 = 7\) and \(7 – 0 = 7\). True.
4. \(9 – 3 = 6\) and \(2 + 4 = 6\). True.

Problem 5: Fill the ten frame

The frame has 3 empty boxes. Count them: 8, 9, 10. That is 3 more counters.

\(7 + 3 = 10\). The missing number is 3.

Grade 1 Equations Worksheet Answer Key: problems 6–10

Problem 6: Make it true

1. \(5 + 3 = 8\). 8.
2. \(9 – 4 = 5\). 5.
3. \(12 = 6 + 6\). 12.
4. \(7 = 15 – 8\). 7.

Problem 7: Missing addend

1. Count up from 6 to 11: 5. \(6 + 5 = 11\). 5.
2. Count up from 5 to 9: 4. \(4 + 5 = 9\). 4.
3. Count up from 8 to 17: 9. \(8 + 9 = 17\). 9.
4. Count up from 7 to 14: 7. \(7 + 7 = 14\). 7.

Problem 8: Jump on the number line

Count the steps from 8 to 14: 9, 10, 11, 12, 13, 14. That is 6 steps.

\(8 + 6 = 14\). The missing number is 6.

Problem 9: Missing subtraction number

1. Count up from 5 to 12: 7. \(12 – 7 = 5\). 7.
2. Count up from 9 to 15: 6. \(15 – 6 = 9\). 6.
3. Add back: \(7 + 6 = 13\). Check: \(13 – 6 = 7\). 13.
4. Add back: \(8 + 3 = 11\). Check: \(11 – 3 = 8\). 11.

Problem 10: Unknown on the right

1. \(13 = 5 + 8\). 5.
2. \(16 = 9 + 7\). 7.
3. \(15 – 4 = 11\). 4.
4. \(18 – 9 = 9\). 9.

Grade 1 Equations Worksheet Answer Key: problems 11–15

Problem 11: Add three groups

Make a ten first: \(4 + 6 = 10\). Then \(10 + 5 = 15\).

\(4 + 6 + 5 = 15\). The sum is 15.

Problem 12: Add three numbers

1. \(2 + 8 = 10\), \(10 + 5 = 15\). 15.
2. \(7 + 3 = 10\), \(10 + 6 = 16\). 16.
3. \(5 + 5 = 10\), \(10 + 9 = 19\). 19.
4. \(3 + 3 = 6\), \(6 + 4 = 10\). 10.

Problem 13: Which equals 12?

1. \(5 + 7 = 12\). Yes.
2. \(20 – 8 = 12\). Yes.
3. \(9 + 4 = 13\). No.
4. \(6 + 6 = 12\). Yes.

The letters are a, b, and d.

Problem 14: Make both sides equal

1. Left side 13. \(10 + 3 = 13\). 3.
2. Left side 14. \(10 + 4 = 14\). 10.
3. Right side \(6 + 7 = 13\). \(8 + 5 = 13\). 5.
4. Left side \(12 – 5 = 7\). \(4 + 3 = 7\). 4.

Problem 15: Maya's markers

Add the three groups: \(5 + 3 = 8\), then \(8 + 6 = 14\).

\(5 + 3 + 6 = 14\). Maya has 14 markers.

Grade 1 Equations Worksheet Answer Key: problems 16–20

Problem 16: Jamal's stickers

The equation is \(12 – ? = 7\). Count up from 7 to 12: 8, 9, 10, 11, 12. That is 5.

Check: \(12 – 5 = 7\). Jamal gave away 5 stickers.

Problem 17: Diego's toy cars

The equation is \(9 + ? = 17\). From 9 to 10 is 1, and from 10 to 17 is 7. Together, \(1 + 7 = 8\).

Check: \(9 + 8 = 17\). Diego got 8 cars.

Problem 18: Sofia's cookies

Add two numbers first: \(4 + 5 = 9\). Then \(9 + 7 = 16\).

\(4 + 5 + 7 = 16\). Sofia bakes 16 cookies.

Problem 19: Bus riders

Step 1: \(8 + 3 = 11\). Step 2: \(11 + 4 = 15\). Step 3: \(15 – 6 = 9\).

9 children are still on the bus.

Problem 20: Priya's beads

The equation is \(6 + 7 + ? = 20\). First, \(6 + 7 = 13\). Count up from 13 to 20: 7.

Check: \(6 + 7 + 7 = 20\). Priya has 7 yellow beads.

How to use this grade 1 equations worksheet answer key

Read this grade 1 equations worksheet answer key after trying each problem yourself, and redo any problem you missed.

See every chapter on the Grade 1 math page.