Quarter 1 Test 3 Review

1. Quarter 1 Test 3 Review X. Mental Math: Multiplying & Dividing with Whole Numbers XI. Mental Math: Multiplying & Dividing with Decimals XII. Scientific Notation XIII. Multiplication of Whole Numbers and Decimals

2. Write in standard form: 1) 2.35 x 108=2) 7.02 x 1015 =3) 4.0001 x 109 =

3. 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 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 =

4. Answers: 1) 1000 2) 100 3) 34.2 4) .74 Write the missing number.1) 23.3 ÷ ________ = .0233 2) 5.4 × ______ = 540 3) _________ ÷ 100 = .3424) ________ × 1000 = 740

5. Answers: 1) 5,628 2) .36 3) 390 4) .23 5) 12.3 6) .089 Multiply or divide mentally.1) 56.28 x100 = 2) 3.6 ÷10 =3) .39 x1000 = 4) 23 ÷ 100 = 5) .123 x100 = 6) 89 ÷ 1000 =

6. Answers: 1) 38,736 2) 1,002,290 3) 956,691 Multiply: 1) 538 x 72 = 2) 6,865 x 146 = 3) 3,429 x 279 =

7. Answers: 1) .00336 2) 874.038 3) .38868 4) .003225 Multiply:1) 1.68 x .002 =2) 418.2 x 2.09 =3) .474 x .82 =4) 2.15 x .0015 =

8. Answers: 1) 1.2 x 1010 2) 6.04 x 108 3) 2.3009 x 1012 Write in scientific notation:1) 12,000,000,0002) 604,000,0003) 2,300,900,000,000

9. Answers: 1) 80 2) 50 3) 20 4) 300 Give the base: 1) ___2 = 6400 2) ___3 = 125,000 3) ___4 = 160,000 4) ____ 3 = 27,000,000

10. Answers: 1) 240,758 2) 81,750 3) 435,780 Multiply: 1) 593 x 406 = 2) 327 x 250 = 3) 807 x 540 =