For 6 + 9, making ten from the 6 means moving 4. That is a lot.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
Swap it round
Think 9 + 6 instead. Now you only move 1.
Why swap first
Making ten from the bigger number moves fewer counters. For 4 + 9, starting at nine moves one instead of six.
Two rules working together
Swapping is allowed, and making ten is quick. Combining them is more powerful than either alone.
Step 2: Try It Yourself
Tap and try it out.
First ten
The rest
9 needs 1 more to make ten. Take 1 from the 6.
Step 3: Watch an Example
One step at a time.
Watch Ana Swap Then Make Ten
Ana is asked for 4 + 9.
- Step 1
She swaps it round in her head: 9 + 4.
Step 4: Your Turn
Practice makes it stick.
The Playground
Problem 1 of 1
There are 5 children on the slide and 8 on the swings. How many children in all?
children
Swap Then Make Ten
Start with the bigger number every time.
1 of 3
3 + 9 = ?
2 of 3
5 + 8 = ?
3 of 3
4 + 7 = ?
Step 5: Quick Check
Show what you know.
Question 1 of 2
6 + 9 = ?
Question 2 of 2
2 + 9 = ?
What You Learned
- Swapping does not change the total.
- Start with the bigger number.
- Then there is less to move.