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Industrial Skills Math and Measurement Review: Skill Assessment Quiz

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

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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)

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Fractions: Subtraction 7.Subtract 1 7/8 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 7 13/16 from 10 1/4 = 10 1/4 = 9 20/16 - 7 13/16 = 7 13/16 2 7/16 (Uncommon Denominators)

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Fractions: Multiplication 9.Multiply 7/8 by 3/4 = 7/8 x 3/4 = 21/32 (Numerator x Numerator) (Denominator x Denominator) 10.Multiply 1 1/2 x 1 1/2 x 1 1/2 = 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

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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 1/4 Or 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

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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

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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

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Decimals: Division 18.Divide 326.16 by 72 = 4.53 72 326.16 288 381 360 216 19.Divide 39.375 by 4.375 = 9. 4.375. 39.375. 20.Divide.133 by.7 =. 19 .7..1. 33 7 63

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Conversions: Fractions to Decimals 21.Convert 3/8 inch to a decimal =.375 inches 3 ÷ 8 =.375 Or 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”

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Conversions: Decimals to Fractions 23.Convert 1.125 inches to a common fraction = 1.125” = 1 125/1000 ” Or 1/2” =.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 ” Or 1/2” =.50” 1/4” =.25” 1/8” =.125” 1/16” =.0625” So 2” +.50” +.125” = 2 5/8 ”

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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

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