Addition Using Counting On
I am learning to use the counting on strategy to solve addition problems.
I know I can do it when I am counting on from the biggest number.
This week we are looking at solving addition sums, focusing on counting on from the largest number. This strategy allows us to count a collection of objects much quicker.
Watch the video below to learn more about counting on. ↓↓↓
Independent Task
To complete today’s task, you will need some playing cards or two dice. If you don’t have any, follow this link for some online dice.
Using cards:
- Remove all of the picture cards and the 10s from your deck so that you only have Aces through to 9s.
- Choose two cards from your deck (eg. 3, 4).
- starting from the biggest number, use the counting on strategy to work out the total of the two cards added together (4+3=7).
- In your maths book, write down the addition problem that you have solved.
Using dice:
- Roll two dice (10 sided if you have them)
- starting from the biggest number, use the counting on strategy to work out the total of the two dice added together (4+3=7).
- In your maths book, write down the addition problem that you have solved.
Repeat this process at least 5 times.
Extension
If you wish to challenge yourself, you could try to use mental strategies to add 2-digit numbers.