You know some doubles already. Double 3 is 6. Double 4 is 8. Double 5 is 10. Double 6 is 12.
Look at this domino: 6 spots on one end and 7 on the other. It is nearly a double. Which double is hiding inside it?
4 and 5 sit next door. Double 4 is eight matching counters. One more counter makes 9. We call this a near double.
A near double is two next-door numbers with a double we know hiding inside. Spot the double on each frame. Then watch what one extra counter does to the total.
Now you and your partner build near doubles at your table. Put your two ten frames side by side, so the rows run across both.
Build the double with red counters: the same number on the top row and on the bottom row. Then add one more yellow counter at the end of the top row. Say it with your partner: double ___ and one more is ___.
- 4 + 5
- 5 + 6
- 7 + 8
Build a near double
In your maths copy, write 6 + 7 = 13.
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