# Maths

Y3

19.1.21

LI - To add mentally two 2-digit numbers and a 2-digit number to a 3-digit number

•  62 + 75 =          How should we would solve this? Well, there are various methods: partition the numbers, add the 1s 2 + 5 = 7 then the 10s 60 + 70 = 130, then add these totals together 130 + 7= 137
• We can also count on six 10s from 75, then add 2 more. We do not need to write it; they are only two 2-digit numbers!

Y2 Group A - Alice, Jey, Layla, Sana, Eliza, Leonardo, Caroline

19.1.21

LI- To be able to count back in 10s and 1s to solve subtraction (not crossing 10s)

## What is 58 - 32? Let’s subtract together using the hundred square grid. ## Have a go at the task below:

Y2 Group B - Raisa, Moise, Diego, Joel, Sara, Valeria, Elli, Tomas, Daryus

19.1.21

LI- To be able to revise number bonds to 10

• Do we know our bonds to ten (pairs of numbers that add to make ten) by heart? e.g. 3 + 7 = 10. We can also write this as 7 + 3 = 10. It is the same, they both total ten. 7 + 3 = 3 + 7
• Number bonds to 10
• 9 + 1 = 10
• 8 + 2 = 10
• 7 + 3 = 10
• 5 + 5 = 10
• 4 + 6 = 10
• 0 + 10 = 10
• We need to know these by heart. Read/practice them at home.

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