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### Grade 4 - Mathematics9.10 Adding and Subtracting Decimals

 Example: Add and express the answers in decimal form. 1/10 + 4/5 The above set of fractions is unlike. We find LCM of the denominators 10,5. LCM is 10. Multiply the numerator and denominator of each fraction by 10. 1/10 x 10/10 = 1/10, 4/5 x 10/10 = 8/10 Add 1/10 and 8/10 which gives 9/10. Convert this to decimal which is 0.9 Answer: 0.9 Example: 3.50 - 1.74 Write the decimals one below the other as shown. Subtract as shown. Answer: 1.76 Directions: Add or subtract the following. Also write 5 examples of your own for addition and subtracting decimals.

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