BrightPath
Addition Within 20: Doubles and Near Doubles
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Today I am practising: using known doubles to solve near-double facts
1
Solve 6 + 6. Then solve 6 + 7 by adding one more.
2
Use 5 + 5 = 10 to solve 5 + 4. What changed?
3
Circle the double in 8 + 9. Write the nearby double fact.
4
Solve 7 + 7 and 7 + 8. Show the difference between the totals.
5
Which is faster for 4 + 5: count all or use 4 + 4? Explain.
6
Write a near-double fact with a total no greater than 20 and show its double helper.
Grown-up note: Ask your learner to explain one answer in their own words.