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Addition and Subtraction

Review: Show your work using model addition and subtraction in a place value chart. Addition and Subtraction. Addition/Subtraction Review. Addition: 5. In the equation below, what number would go into the blank to make it true? 23+(11+45)= (23+11)+___ 79 34 45 56.

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Addition and Subtraction

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  1. Review: Show your work using model addition and subtraction in a place value chart Addition and Subtraction

  2. Addition/Subtraction Review

  3. Addition: 5 In the equation below, what number would go into the blank to make it true? 23+(11+45)= (23+11)+___ • 79 • 34 • 45 • 56 Remember the Associative Property of Addition!

  4. Addition: 25 Andrew scored 23 points on Wii basketball and 95 points on Wii bowling. How many points did Andrew score altogether? Answer: 118 points

  5. Addition: 50 The snack bar sold 53 sodas and 129 bottles of water. What is the sum of the drinks the snack bar sold? Answer: 182 drinks

  6. Addition: 100 Which number sentence is true? • 41+12 > 33+16 • 12+25 < 17+33 • 18+41 < 33+16 • 12+16 > 25+41 You must figure out the totals on both sides of the inequality (< >) first. Remember the > opens to the bigger number!

  7. Subtraction: 5 18-5=13 ? 13+5=18 5+13=18 Which number sentence would complete the set? • 13-5=18 • 18-13=5 • 18+13=5 • 5+18=13

  8. Subtraction: 25 Christos had 67 jelly beans for snack. He gave away 35 to his friends. How many jelly beans does he have now? Answer: 32 jelly beans

  9. Subtraction: 50 517-239= Answer: 276

  10. Subtraction: 100 The population of WHS is 1,024 kids. The population of WES is 564 kids. What is the difference in the populations? Answer: 460

  11. Mixed: 5 What number would go into the blank to make the equation true? 53+__=53 • 100 • 106 • 53 • 0 Remember the Zero Property of Addition!

  12. Mixed: 25 Which number should be placed in the blank to make the number sentence true? 92-__=63 • 29 • 155 • 31 • 39 Check each answer to see which one works, or take 63 away from 92.

  13. Mixed: 50 What number goes in the blank to make the sentence true? ____+164=921 • 1,085 • 843 • 757 • 525 Think backwards…the blank must be a number larger than 164. Try subtracting 921-164.

  14. Mixed: 100 Which expression has the same value as 15+10? • 25-10 • 30-5 • 10+5 • 25+5 Solve 15+10 first, then solve each of the answer choices until you find a match.

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