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To find near doubles

To find near doubles. First try these : 10+10=. 20. 16. 8+8=. 5+5=. 10. 14. 7+7=. Now try these : 15+15=. 30. 12. 6+6=. 12+12=. 24. 20+20=. 40. If 7+7= . 14. What would 7+8 be?. 15. What would 7+6 be?. 13. If 5+5= . 10. What would 5+6 be?. 11. What would 4+5 be?. 9.

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To find near doubles

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  1. To find near doubles

  2. First try these: 10+10= 20 16 8+8= 5+5= 10 14 7+7=

  3. Now try these: 15+15= 30 12 6+6= 12+12= 24 20+20= 40

  4. If 7+7= 14 What would 7+8 be? 15 What would 7+6 be? 13

  5. If 5+5= 10 What would 5+6 be? 11 What would 4+5 be? 9

  6. If 12+12= 24 What would 12+11 be? 23 What would 12+13 be? 25

  7. If 15+15= 30 What would 15+16 be? 31 What would 14+15 be? 29

  8. If 12+12= 24 What would 12+11 be? 23 What would 12+13 be? 25

  9. If 32+32= 64 What would 32+33 be? 65 What would 31+33 be? 64

  10. If 20+20= 40 What would 19+20 be? 39 What would 19+21 be? 40

  11. 21+19 Which double number would help? 20+20= 40 21+19= 40 41 22+19=

  12. 61+59 Which double number would help? 60+60= 120 61+59= 120 63+59= 122

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