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

2. Addition/Subtraction Review AdditionSubtractionMixed 555 25 50 100

3. Addition: 5 In the equation below, what number would go into the blank to make it true? 23+(11+45)= (23+11)+___ a. 79 b. 34 c. 45 d. 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? a. 41+12 > 33+16 b. 12+25 < 17+33 c. 18+41 < 33+16 d. 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? a. 13-5=18 b. 18-13=5 c. 18+13=5 d. 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 a. 100 b. 106 c. 53 d. 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 a. 29 b. 155 c. 31 d. 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 a. 1,085 b. 843 c. 757 d. 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? a. 25-10 b. 30-5 c. 10+5 d. 25+5 Solve 15+10 first, then solve each of the answer choices until you find a match.