Watch: How to multiply and divide 0, 1,10 and 100
Multiplying by 1, 10, or 100
When you multiply by 1 the answer stays the same.
21 Ă— 1 = 21
When you multiply by 10, move all the digits one place to the left, putting a zero in the empty space.
21 Ă— 10 = 210
When you multiply by 100, move all the digits two places to the left, putting a zero in the empty spaces.
21 Ă— 100 = 2100
Multiplying by 0
Any number multiplied by 0 is 0
5 Ă— 0 = 0
100 Ă— 0 = 0
9456 Ă— 0 = 0
What is 1,000,000 Ă— 0?
Dividing by 1, 10 or 100
When you divide by 1 the answer stays the same.
21 Ă· 1 = 21
When you divide by 10, move all the digits one place to the right.
210 Ă· 10 = 21
When you divide by 100, move all the digits two places to the right.
2100 Ă· 100 = 21
Activities
Activity 1
Activity 2
Quiz
NEW! Play Guardians: Defenders of Mathematica - the Halloween update. game
Experience Mathematica as you’ve never seen it before, with all-new backgrounds and costumes for Halloween. Available for a limited time only. Use your maths skills to save the day before it's too late!
More on Multiplying and dividing
Find out more by working through a topic
- count3 of 36
- count4 of 36
- count5 of 36
- count6 of 36
