1 / 5

Decimal Operations

Decimal Operations. 1. 1. 27.4. 0. 9.87. Add trailing zeros to assist with place value identification (optional step). 2. 7. . Bring down decimal point. Final Answer. 37.27. Adding Decimal Numbers. Align vertically with decimal points to maintain place values. +. 3. 7.

clay
Download Presentation

Decimal Operations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Decimal Operations

  2. 1 1 27.4 0 9.87 • Add trailing zeros to assist • with place value identification • (optional step) 2 7 . • Bring down decimal point Final Answer 37.27 Adding Decimal Numbers • Align vertically with decimal points • to maintain place values + 3 7 • Add and carryasnormal .

  3. 13 10 3 6 27.4 0 5.87 • Add trailing zeros to assist • with place value identification and borrowing . 5 3 • Bring down decimal point Final Answer 21.53 Subtracting Decimal Numbers • Align vertically with decimal points • to maintain place values - 2 1 • Borrow and subtractasnormal .

  4. 3.74 • Multiply the top factor by the ‘apparent’ ones place value in the bottom factor 7.3 x 1122 + 2618 • Multiply the top factor by the ‘apparent’ tens place value in the bottom factor. • BE SURE to shift the product by one place value (factor of 10). • Repeat for each additional place value in the bottom factor. . 27302 Final Answer • Add the individual products 27.302 • Place decimal point one place to the left for every decimal place value in the two factors. Multiplying Decimal Numbers • Ignore decimal points .

  5. Rewrite using the long division box . 4 • Shift the decimal in the divisor to make the divisor a whole number. 3 7 7.3 27.302 • Then shift the decimal the same number of spaces in the dividend. - 219 0 54 • Move the decimal point straight up to the quotient line. - - 511 2 29 0 292 Final Answer 3.74 Dividing Decimal Numbers 27.302 ÷ 7.3 • Now ignore the decimal. Treat as whole numbers • Do the long division one step at a time. Pay close attention to alignment of columns (place value). Use graph paper if necessary. .

More Related