Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
SOL 5.5 Notes Decimal Operations Addition and subtraction of decimals is like adding and subtracting whole numbers. The only thing we MUST remember is to line up the decimals! Add a 0 here so you can regroup To multiply decimals, first multiply them as if they were whole numbers. Then, you must figure out where to place the decimal in the product. To do this, count the number of places behind the decimal in the entire problem (both factors.) Then, put the same number of places behind the decimal in the product. You do not need to line up decimals or place values when multiplying. Dividing decimal numbers is like dividing whole numbers. We just need to remember to bring the decimal straight up to the quotient. -2 0 35 - 35 0 0 When estimating decimal numbers, round to largest place of the smallest number, then perform the operation. 23.67 24.00 2.43 2.00 + 11.86 + 12.00 38.00 49.72 52.41 + 10.82 50.00 50.00 +10.00 110.00 Sample Questions 1. Claire’s sells bracelets for $4.99 each. Michelle bought 4 yellow bracelets and 5 pink bracelets. How much did Michelle spend at Claire’s? A B C D $19.96 $24.95 $44.91 $49.90 2. What is 56.834 – 3.497 A B C D 53.337 53.463 60.331 91.804 3. 56.89 X 45.2 = A B C D 2,571,428 25,714.28 2,571.428 257.1428 4. Andrew and his two brothers want to put their money together to buy a new gaming system. If the gaming system costs $168.69, how much money will each boy need to contribute so they put in equal amounts? A B C D $56.23 $84.34 $171.69 $506.07 5. 98.34 + 61.7 A B C D 36.64 92.17 104.51 160.04