Bonds to 100 (tens and ones)
Home learning focus
Today's lesson is on number bonds to 100 using tens and ones (for example 20 + 70 = 90 or 60 + 40 = 100).
This lesson includes:
- two animations
- three activities
Tens and ones
First, watch the animation below. It explains how you can represent two-digit numbers using 10 and 1s. Understanding about place value is really important when you are adding and subtracting numbers.
Any two-digit number can be shown using tens and ones. For example, the number 34 can be divided into three lots of ten and four lots of one.
Number bonds are a pair of numbers that add up to make another specific number. They are sometimes called number pairs.
They can show you how numbers join together and how they break down into different parts.
Play the addition and subtraction level of Karate Cats Maths - can you collect a cool new costume for your cats?
There's more to learn...
Have a look at these other resources around the BBC and the web.