1. Decimal Multiplication Rules Numbers and Operations M05.A Aligning with Pennsylvania Department of Education Common Core Assessment Anchors and enVision Math Textbook Topic 7 Multiply Decimals (Topic 7-1 through 7- 4) ©2012-2013 Caryn Dingman www.mrsdingman.com

2. 2 multiply decimals by 10, 100, 1000 enVision Math Topic 7 PA Assessment Anchor M05.A Multiply by:Move Decimal Point to the Right: 10 places 101 place 1002 places 10003 places Example: 1 X. 45 =. 45 10 X. 45 = 4. 5 100 X. 45 = 45. 00 1000 X. 45 = 450. 00 ©2012-2013 Caryn Dingman www.mrsdingman.com

3. 3 multiply decimals by a whole number enVision Math Topic 7 PA Assessment Anchor M05.A ©2012-2013 Caryn Dingman www.mrsdingman.com 1. Multiply as if each factor was a whole number. 2. Count the number of digits after the decimal point in each factor. 3. Move that total number of digits from the right to place decimal point in the product.

4. 4 multiply decimals by decimals enVision Math Topic 7 PA Assessment Anchor M05.A ©2012-2013 Caryn Dingman www.mrsdingman.com