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Near Doubles

Near Doubles. Katie Ptacek. First Grade Math. You can use doubles facts to figure out other addition sentences, too! Math is all about patterns. Words to Know . Addend: A number that can be added to another number. In the problem “2+3 = 5,” both “2” and “3” are addends.

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Near Doubles

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  1. Near Doubles Katie Ptacek

  2. First Grade Math You can use doubles facts to figure out other addition sentences, too! Math is all about patterns.

  3. Words to Know Addend: A number that can be added to another number. In the problem “2+3 = 5,” both “2” and “3” are addends. Sentence: A math statement. For example: “4+5 = 9” is a sentence. Product: What you get at the end of the sentence. In “4+5=9,” “9” is the product.

  4. Let’s Get Started… 3+3 = 6 4 is one more than 3 so 3+4 = 7!

  5. Also… 4+4 = 8 3 is one LESS than 4. so 4+3 = 7! (You can get there two ways!)

  6. Ready to Try Another One? 6+6 = 12 Let’s turn one of the 6s into a 7. 6+7 = 13! (7+7 = 14, which is one more than 13. See any patterns yet?) Click on this to go back to the quiz!! →

  7. Let’s See What You Know! Question #1 Question #2 Question #3

  8. Ready? 1. If 4+4 = 8, then 4+5 = ? • 8 • 9 • 10

  9. Here’s a Challenge! 2. If 7+7 = 14, then 7+6 = ? • 11 • 15 • 13

  10. Let’s Change It Up 3. Which doubles sentence could help you solve this sentence: 5+6 = 11? • 5+5 = 10 • 7+7 = 14 • 4+4 = 8

  11. You’re Right! Since 5 is 1 more than 4, 4+5 is 1 more than 4+4. Since 4+4 = 8, 4+5 = 9.

  12. You’re Right! Since 6 is 1 less than 7, 6+7 is 1 less than 7+7. Since 7+7 = 14, 6+7 = 13.

  13. You’re Right! 11 is 1 more than 10. So you could think of 5+5 = 10 and just add 1 if you need to solve 5+6!

  14. Uh-Oh! Try Again. Perhaps you need to review the information slides…

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