scott248
scott248 4d ago • 0 views

Test your Grade 3 mental math: Counting On and Counting Back questions

Hey there! 👋 Ready to boost your mental math skills in Grade 3? Let's dive into 'Counting On' and 'Counting Back' with some fun examples and practice questions!
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2 Answers

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matthew.robbins Jan 7, 2026

💡 Quick Study Guide: Counting On & Counting Back

  • ➕ Counting On: Start with a number and add to it mentally. Think $5 + 3 = ?$ (Start at 5, count 6, 7, 8).
  • ➖ Counting Back: Start with a number and subtract from it mentally. Think $8 - 2 = ?$ (Start at 8, count 7, 6).
  • 📏 Use a Number Line: Visualize a number line to help you count on or back.

✏️ Mental Math Quiz Time!

  1. What is 7 + 3 using counting on?
    1. 8
    2. 9
    3. 10
    4. 11
  2. What is 12 - 4 using counting back?
    1. 6
    2. 7
    3. 8
    4. 9
  3. Count on by 5 from 15. What number do you get?
    1. 18
    2. 19
    3. 20
    4. 21
  4. Count back by 3 from 20. What number do you get?
    1. 15
    2. 16
    3. 17
    4. 18
  5. What is 9 + 6 using counting on?
    1. 14
    2. 15
    3. 16
    4. 17
  6. What is 14 - 5 using counting back?
    1. 7
    2. 8
    3. 9
    4. 10
  7. Count on by 4 from 21. What number do you get?
    1. 23
    2. 24
    3. 25
    4. 26
🔑 Answer Key
  • ✅ C) 10
  • ✅ B) 8
  • ✅ C) 20
  • ✅ D) 17
  • ✅ B) 15
  • ✅ C) 9
  • ✅ C) 25
✅ Best Answer
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michael.wong Jan 7, 2026

💡 Quick Study Guide: Counting On & Counting Back

  • ➕ Counting On: Start with a number and add to it. Example: 5 + 3. Start at 5, then count on 3 more: 6, 7, 8. So, 5 + 3 = 8.
  • ➖ Counting Back: Start with a number and subtract from it. Example: 9 - 2. Start at 9, then count back 2: 8, 7. So, 9 - 2 = 7.
  • ➡️ Mental Math Tips: Practice regularly. Visualize the numbers. Use your fingers if needed. Break down larger numbers.

✏️ Quiz Time!

  1. What is 7 + 4 using counting on?
    1. 9
    2. 10
    3. 11
    4. 12
  2. What is 12 - 3 using counting back?
    1. 7
    2. 8
    3. 9
    4. 10
  3. If you have 6 apples and you get 5 more, how many do you have in total?
    1. 9
    2. 10
    3. 11
    4. 12
  4. You have 15 cookies and you eat 4. How many cookies are left?
    1. 9
    2. 10
    3. 11
    4. 12
  5. What is 8 + 6 using counting on?
    1. 12
    2. 13
    3. 14
    4. 15
  6. What is 20 - 5 using counting back?
    1. 13
    2. 14
    3. 15
    4. 16
  7. Sarah has 9 stickers and gives 2 to her friend. How many stickers does Sarah have left?
    1. 5
    2. 6
    3. 7
    4. 8
✔️ Answer Key
  • 1️⃣ C (11)
  • 2️⃣ C (9)
  • 3️⃣ C (11)
  • 4️⃣ C (11)
  • 5️⃣ E (14)
  • 6️⃣ F (15)
  • 7️⃣ G (7)

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