__________________________ Multiply by 10, 100, 1000, etc. Strategy Mental Math Strategy Use this strategy when multiplying by 10, 100, 1000, ... (a power of 10). When to use this strategy: To use this strategy tack on zeros or move the decimal place (to the right because How to use this strategy: you are making it larger). 378 x 100 = 37800. 5.6 x 1000 = 5600. Examples: Use this (new) strategy on the following: Use any strategy you know on the following: (1.) 479 x 100 = (2.) 10 x 4,296 = (6.) 859 200 = (7.) 24,270 x 10 = – (3.) Solve (5.) The population of is 6,500. is (8.) 94.175 x 100 = (9.) Solve 10 times bigger than . What is the 30 + = 9543 (10.) For Internet downloads, x population of Hartford? dialup speed is .049 megabits per second. High Speed Internet is (4.) 85.7 advertised to be 100 times faster x 1000 than dialup. How fast are High Speed Internet downloads?
Multiply by 10, 100, 1000, etc. Strategy __________________________ Mental Math Strategy When to use this strategy: Use this strategy when multiplying by 10, 100, 1000, ... (a power of 10). How to use this strategy: To use this strategy tack on zeros or move the decimal place (to the right because you are making it larger). Examples: 378 x 100 = 37800. 5.6 x 1000 = 5600. Use this (new) strategy on the following: Use any strategy you know on the following: (1.) 479 x 100 = (2.) 10 x 4,296 = (6.) 859 – 200 = (7.) 24,270 x 10 = (3.) Solve (5.) The population of is 6,500. is 10 times bigger than . What is the population of Hartford? (8.) 94.175 x 100 = (9.) Solve 30 + x = 9543 (10.) For Internet downloads, dialup speed is .049 megabits per second. High Speed Internet is advertised to be 100 times faster than dialup. How fast are High Speed Internet downloads? (4.) 85.7 x 1000
6wkshtsCntingOn-Mult-Div10.100-FrontEnd-DoubleUpTo20.docx