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.
Today we build near doubles together: 4 + 5, then 5 + 6, then 7 + 8. Build the double first, then add one more.
Build a near double
In your maths copy, write 6 + 7 = 13.
Today we work through these near doubles together: 3 + 4, then 5 + 6, then 6 + 7. Spot the hidden double before you build.
Near doubles challenge
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