Year 5 Maths: Multiples of 10%

Introduction to Multiples of 10%

Hello, Year 5! Today, we are going to learn about multiples of 10%. This is a really useful skill that can help you with money, shopping, and many other everyday things. So, let’s dive in!

What is 10%?

First, let’s break down what 10% means. When we talk about percentages, we are talking about parts of 100. So, 10% means 10 out of 100. If you think about it this way, it’s like saying for every 100 things, 10 of them make up 10%.

Finding 10% of a Number

To find 10% of a number, you can use a simple trick: just divide the number by 10.

Example 1:

• What is 10% of 50? $$50 \div 10 = 5$$

So, 10% of 50 is 5.

Example 2:

• What is 10% of 200? $$200 \div 10 = 20$$

So, 10% of 200 is 20.

Multiples of 10%

Now, what if we want to find multiples of 10%? This means we are going to find 10%, 20%, 30%, and so on.

To do this, you can just multiply the number by the percentage. Here’s how:

Finding 20%:

To find 20%, you can double the 10%.

Example 3:

• What is 20% of 50?We already know 10% of 50 is 5. $$5 \times 2 = 10$$

So, 20% of 50 is 10.

Finding 30%:

To find 30%, you can multiply 10% by 3.

Example 4:

• What is 30% of 50? $$5 \times 3 = 15$$

So, 30% of 50 is 15.

Key Rules

1. To find 10%, divide the number by 10.
2. To find 20%, double the 10%.
3. To find 30%, triple the 10%.
4. To find 40%, multiply the 10% by 4.
5. And so on…

Tips and Tricks

• Remember, finding 10% is easy! Just divide by 10.
• To find higher percentages, think of them as multiples of 10%.
• Practice with different numbers to get the hang of it!

Questions

Easy Level Questions

1. What is 10% of 30?
2. What is 20% of 50?
3. What is 30% of 80?
4. What is 10% of 100?
5. What is 20% of 200?
6. What is 30% of 90?
7. What is 10% of 70?
8. What is 20% of 60?
9. What is 30% of 40?
10. What is 10% of 150?
11. What is 20% of 10?
12. What is 10% of 500?
13. What is 20% of 250?
14. What is 30% of 30?
15. What is 10% of 120?
16. What is 20% of 40?
17. What is 30% of 70?
18. What is 10% of 200?
19. What is 20% of 30?
20. What is 30% of 60?

Medium Level Questions

1. What is 10% of 450?
2. What is 20% of 320?
3. What is 30% of 250?
4. What is 10% of 360?
5. What is 20% of 90?
6. What is 30% of 110?
7. What is 10% of 80?
8. What is 20% of 600?
9. What is 30% of 180?
10. What is 10% of 550?
11. What is 20% of 75?
12. What is 30% of 150?
13. What is 10% of 700?
14. What is 20% of 90?
15. What is 30% of 300?
16. What is 10% of 850?
17. What is 20% of 400?
18. What is 30% of 120?
19. What is 10% of 1200?
20. What is 20% of 240?

Hard Level Questions

1. What is 10% of 987?
2. What is 20% of 1234?
3. What is 30% of 456?
4. What is 10% of 890?
5. What is 20% of 765?
6. What is 30% of 345?
7. What is 10% of 999?
8. What is 20% of 876?
9. What is 30% of 654?
10. What is 10% of 1111?
11. What is 20% of 432?
12. What is 30% of 789?
13. What is 10% of 5555?
14. What is 20% of 6789?
15. What is 30% of 2345?
16. What is 10% of 1342?
17. What is 20% of 907?
18. What is 30% of 5678?
19. What is 10% of 4321?
20. What is 20% of 11111?

Answers

Easy Level Answers

1. 3
2. 10
3. 24
4. 10
5. 40
6. 27
7. 7
8. 12
9. 12
10. 15
11. 1
12. 50
13. 50
14. 9
15. 12
16. 8
17. 21
18. 20
19. 6
20. 18

Medium Level Answers

1. 45
2. 64
3. 75
4. 36
5. 18
6. 33
7. 8
8. 120
9. 54
10. 55
11. 15
12. 45
13. 70
14. 18
15. 90
16. 85
17. 36
18. 120
19. 120
20. 48

Hard Level Answers

1. 98.7
2. 246.8
3. 136.8
4. 89
5. 153
6. 103.5
7. 99.9
8. 175.2
9. 196.2
10. 111.1
11. 86.4
12. 236.7
13. 555.5
14. 1357.8
15. 703.5
16. 134.2
17. 181.4
18. 1703.4
19. 432.1
20. 2222.2

I hope this helps you understand multiples of 10% better! Keep practicing, and you’ll become a pro in no time!