2. Review for Quarter 1 Test 1 I. Base Ten Place-Value System II. Exponents III. Expanded Notation IV.Mental Math with Mult. & Division V. Estimating with Whole Numbers VI. Order of Operations

3. Estimate: 74,298 + 126,001 ≈ Answer: 70,000 + 130,000 = 200,000

4. Evaluate: [8 ÷ (1 + 3) x 5 2 - 2] ÷ 6 Answer: 8

5. Give the base: 1) ___ 2 = 6400 2) ___ 3 = 125,000 3) ___ 4 = 160,000 4) ____ 3 = 8,000,000 Answers: 1) 80 2) 50 3) 20 4) 200

6. Answer: 300,000 ÷ 600 ≈ 500 Estimate: 320,176 ÷ 623 ≈

7. Complete the statement. Use +, -, x or ÷. Use the symbol only once. Do not use parentheses. 7 ___ 7 ___ 7 ___7 = 14 Answer: 7 + 7 ÷ 7 x 7 = 14

8. 10 12 = Answer: 1,000,000,000,000

9. 35=35= Answer: 243 (Remember 3 5 means repeated multiplication.) 3 5 = 3 x 3 x 3 x 3 x 3

10. Estimate: 4,298 x 63 ≈ Answer: 4,000 x 60 ≈ 240,000

11. What is the value of the 4 in 54,907,112? Answer: 4,000,000

12. In the number 68,134,754,029, the 6 is in which place-value? Answer: ten billions

13. 3,000,000 + 6,000 + 500 + 30 + 8 = Answer: 3,006,538

14. (2 x 10 8 ) + (7 x 10 6 ) + (1 x 10 3 ) + (5 x 10 0 ) = Answer: 207,001,005

15. In 801,692,746, the zero is in which place-value? Answer: ten millions

16. 72,009,260 written in expanded form using powers of 10 is _______ Answer: (7x10 7 )+(2 x 10 6) +(9 x 10 3 )+(2 x 10 2 )+(6 x 10 1 )

17. Compare. Use or =. 1) 3 3 ___ 2 5 2) 10,000 0 ____ 10 4 3) 2 6 ____ 4 3 Answers: 1) < 2) < 3) =

18. Multiply or divide mentally. 1) 300 x 400 = 2) 72,000 ÷ 80 = 3) 50 x 6,000 = 4) 120,000 ÷ 600 = 5) 60 x 900 = 6) 540,000 ÷ 9,000 = 7) 110 x 70 = 8) 36,000 ÷ 40 = 9) 300 x 500 = 10) 3000 ÷ 150 = Answer: 1) 120,000 2) 900 3) 300,000 4) 200 5) 54,000 6) 60 7) 7700 8) 900 9) 150,000 10) 20

19. 8 ___ = 4096 Answer: 4

20. Use 4, 7, 8 to make the sentence true. ____ + ____ x ____ = 36 Answer: 8 + 4 x 7 = 36

21. 2 -- = 64 Answer: 2 6

22. The standard form of (2 x 10 7 )+(9 x 10 4 )+(1 x 10 2 )+(6 x 10 1 ) is __________ Answer: 20,090,160

23. Estimate: 52,178 - 3,823 ≈ Answer: 52,000 - 4,000 = 48,000

24. True or False: 5 4 =4 5 Explain. Answer: False. 5 4 = 5x5x5x5=625 4 5 = 4x4x4x4x4=1024