Understanding Remainders

Hello Year 6! Today, we are going to learn about remainders. This is an important concept in division. Let’s break it down step by step.

What is a Remainder?

When we divide one number by another, sometimes we can’t divide evenly. For example, if we try to divide 10 by 3:

  • 3 goes into 10 three times, which makes 9 (3 x 3 = 9).
  • If we subtract 9 from 10, we have 1 left over.

This 1 is called the remainder. So we say:

10 \div 3 = 3 \text{ remainder } 1

Key Rules About Remainders

  1. Division Basics: When you divide, you are trying to find out how many times one number fits into another.
  2. Whole Numbers: The result of a division can be a whole number with a remainder, or it can be a decimal/fraction.
  3. Remainder Less Than Divisor: The remainder will always be less than the number you are dividing by (the divisor).
  4. Expressing Remainders: You can express a remainder in different ways:
    • As “remainder” (e.g., 10 ÷ 3 = 3 R1)
    • As a decimal (e.g., 10 ÷ 3 = 3.33)
    • As a fraction (e.g., 10 ÷ 3 = 3 + 1/3)

Tips and Tricks

  • Use Counters: If you have some counters or blocks, you can physically divide them to see how many full groups you can make and what’s left over.
  • Check Your Work: After finding the quotient and remainder, multiply the divisor by the quotient and add the remainder. It should equal the original number.
  • Practice with Real-Life Examples: Think about practical situations, like sharing sweets or toys among friends.

Examples

  1. Example 1: Divide 17 by 5.
    • 5 fits into 17 three times (5 x 3 = 15).
    • 17 – 15 = 2, so the remainder is 2.
    • Answer: 17 \div 5 = 3 \text{ remainder } 2
  2. Example 2: Divide 23 by 4.
    • 4 fits into 23 five times (4 x 5 = 20).
    • 23 – 20 = 3, so the remainder is 3.
    • Answer: 23 \div 4 = 5 \text{ remainder } 3
  3. Example 3: Divide 30 by 6.
    • 6 fits into 30 five times exactly (6 x 5 = 30).
    • There is no remainder.
    • Answer: 30 \div 6 = 5 \text{ remainder } 0

Practice Questions

Easy Level

  1. What is 8 \div 3
    ?
  2. What is 15 \div 2
    ?
  3. What is 10 \div 4
    ?
  4. What is 18 \div 5
    ?
  5. What is 12 \div 4
    ?
  6. What is 9 \div 2
    ?
  7. What is 20 \div 6
    ?
  8. What is 7 \div 3
    ?
  9. What is 14 \div 5
    ?
  10. What is 25 \div 4
    ?
  11. What is 16 \div 3
    ?
  12. What is 11 \div 2
    ?
  13. What is 21 \div 5
    ?
  14. What is 30 \div 7
    ?
  15. What is 27 \div 4
    ?
  16. What is 22 \div 3
    ?
  17. What is 28 \div 5
    ?
  18. What is 32 \div 6
    ?
  19. What is 15 \div 6
    ?
  20. What is 13 \div 4
    ?

Medium Level

  1. What is 34 \div 3
    ?
  2. What is 45 \div 7
    ?
  3. What is 50 \div 8
    ?
  4. What is 39 \div 5
    ?
  5. What is 62 \div 9
    ?
  6. What is 56 \div 7
    ?
  7. What is 70 \div 4
    ?
  8. What is 77 \div 6
    ?
  9. What is 88 \div 5
    ?
  10. What is 91 \div 8
    ?
  11. What is 54 \div 7
    ?
  12. What is 63 \div 8
    ?
  13. What is 72 \div 9
    ?
  14. What is 81 \div 6
    ?
  15. What is 48 \div 5
    ?
  16. What is 90 \div 7
    ?
  17. What is 99 \div 10
    ?
  18. What is 66 \div 4
    ?
  19. What is 44 \div 3
    ?
  20. What is 102 \div 11
    ?

Hard Level

  1. What is 135 \div 11
    ?
  2. What is 250 \div 17
    ?
  3. What is 175 \div 12
    ?
  4. What is 195 \div 15
    ?
  5. What is 360 \div 29
    ?
  6. What is 402 \div 21
    ?
  7. What is 512 \div 40
    ?
  8. What is 275 \div 18
    ?
  9. What is 420 \div 34
    ?
  10. What is 600 \div 47
    ?
  11. What is 750 \div 36
    ?
  12. What is 888 \div 37
    ?
  13. What is 999 \div 18
    ?
  14. What is 1000 \div 33
    ?
  15. What is 1500 \div 61
    ?
  16. What is 2000 \div 75
    ?
  17. What is 3000 \div 89
    ?
  18. What is 4500 \div 94
    ?
  19. What is 5000 \div 123
    ?
  20. What is 6000 \div 200
    ?

Answers

Easy Level Answers

  1. 2 R2
  2. 7 R1
  3. 3 R2
  4. 3 R3
  5. 3 R0
  6. 4 R1
  7. 3 R2
  8. 2 R1
  9. 2 R4
  10. 6 R1
  11. 5 R1
  12. 5 R1
  13. 4 R1
  14. 4 R2
  15. 6 R3
  16. 7 R1
  17. 5 R3
  18. 5 R2
  19. 2 R1
  20. 3 R1

Medium Level Answers

  1. 11 R1
  2. 6 R3
  3. 6 R2
  4. 7 R4
  5. 6 R8
  6. 8 R0
  7. 17 R2
  8. 12 R5
  9. 17 R3
  10. 11 R3
  11. 7 R5
  12. 7 R7
  13. 8 R0
  14. 13 R3
  15. 9 R3
  16. 12 R6
  17. 9 R0
  18. 16 R2
  19. 14 R2
  20. 9 R3

Hard Level Answers

  1. 12 R3
  2. 14 R12
  3. 14 R7
  4. 13 R0
  5. 12 R12
  6. 19 R3
  7. 12 R32
  8. 15 R5
  9. 12 R12
  10. 12 R24
  11. 20 R30
  12. 24 R0
  13. 55 R9
  14. 30 R10
  15. 24 R12
  16. 80 R0
  17. 33 R39
  18. 47 R22
  19. 40 R60
  20. 30 R0

Now, let’s practice these questions and remember, it’s okay to make mistakes. They help us learn! Happy dividing!