Industrial Skills

Math and Measurement Review: Skill Assessment Quiz

Whole Numbers

1. Add 666+434+204+989= 666

434204989

2,293

2. Subtract 847 from 9321= 9,321 - 847 8,474

3. Multiply 784 by 13 = 784 Χ 13 2352 784 10,192

4. Divide 3172 by 152 = 21 20.86 152 3172.00 304 132.0 1216 1040 912 120

Fractions: Addition

5. Add 3/8 + 5/8 + 7/8 = 3/8

5/8

7/8

15/8 = 1 7/8

(Common Denominators)

6. Add 10 9/16 + 4 1/8 + 2 1/2 + 3 = 10 9/16 = 9/16

4 1/8 = 2/16

2 1/2 = 8/16

3

19 19/16 = 20 3/16

(Uncommon Denominators)

Fractions: Subtraction

7. Subtract 17/8 from 2 3/8 = 2 3/8 = 1 11/8

- 1 7/8 = 1 7/8

0 4/8 = 1/2

(Common Denominators)

8. Subtract 713/16 from 101/4 = 10 1/4 = 9 20/16

- 7 13/16 = 7 13/16

2 7/16

(Uncommon Denominators)

Fractions: Multiplication

9. Multiply 7/8 by 3/4 = 7/8 x 3/4 = 21/32

(Numerator x Numerator)

(Denominator x Denominator)

10. Multiply 11/2 x 11/2 x 11/2 = 3/2 x 3/2 = 9/4 x 3/2 = 27/8

= 3 3/8

Or

3 x 3 x 3 27 = = 3 3/8 2 x 2 x 2 8

Fractions: Division

11. 21 ÷ 1/4 = (invert the divisor and multiply)

21/1 x 4/1 = 84/1 = 84

12. 1/4 ÷ 21 =(invert the divisor and multiply)

1/4 x 1/21 = 1/84

13. 3 1/16 ÷ 1/4 =(invert the divisor and multiply)

3 1/16 = 49/16 therefore 49/16 x 4/1 = 196/16 (12 x 16 = 192) = 12 4/16

= 12 1/4Or

3 ÷ 1/4 = 3/1 x 4/1 = 12/1 1/16 ÷ 1/4 = 1/16 x 4/1 = 4/16

Therefore 12/1 + 4/16 = 12 4/16

= 12 1/4

Decimals: Addition & Subtraction

14. Add 244.05 + 43.1 + 7.982 + 22 = 244.05

43.1 7.982 (When adding numbers, align the decimals)

22.000

317.132

15. Subtract 783.21 from 897.37 = 897.37

- 783.21 (When subtracting numbers, align the decimals)

114.16

Decimals: Multiplication

16. Multiply 1125 x 1.5 = 1125 x 1.5

5625 1125

1687.5

17. Multiply 1.321 x 2.51 = 1.321 x 2.51 1321 6605 2642

3.31571

Decimals: Division

18. Divide 326.16 by 72 = 4.53 72 326.16 288 381 360 216 216

19. Divide 39.375 by 4.375 = 9.

4.375 . 39.375.

20. Divide .133 by .7 =

.19 .7. .1.33 7 63 63

Conversions: Fractions to Decimals

21. Convert 3/8 inch to a decimal = .375 inches

3 ÷ 8 = .375Or

1/2” = .50”1/4” = .25”

1/8” = .125”1/16” = .0625”

So

.25” + .125” = .375”

22. Convert 1 3/4 inch to a decimal = 1.75 inches

3 ÷ 4 = .75 therefore 1 + .75 = 1.75

Or

1/2” = .50”

1/4” = .25”

1/8” = .125”

So

1” + .50” + .25” = 1.75”

Conversions: Decimals to Fractions

23. Convert 1.125 inches to a common fraction =1.125” = 1 125/1000”

Or1/2” = .50”1/4” = .25”

1/8” = .125”1/16” = .0625”

So

1” + .125” = 1 1/8”

24. Convert 2.625 inches to a common fraction =2.625” = 2 625/1000”

Or1/2” = .50”1/4” = .25”

1/8” = .125”1/16” = .0625”

So

2” + .50” + .125” = 2 5/8”

Estimating Measurements:

• Draw a line in the space below that you would estimate to be approximately 1 inch long.

• Draw a line in the space below that you would estimate to be approximately 50 millimeters long