By 10, by 9, by 5, by 3, and by chunks. This unit contains tricks for multiplication and for checking your work. A playful (and very useful) approach to multiplication. This unit is presented at three levels of varying complexity.
Sydney got twenty-one e-mails on Monday, nineteen on Tuesday, thirty-seven on Wednesday, eight on Thursday, and twenty-three on Friday. How many e-mails did she get on Monday, Tuesday, Wednesday, and Friday, combined? Six word problems.
A one page lesson on the Properties of Addition & Multiplication includes: commutative property, associative property, distributive property, identity property, and zero property. It is followed by two pages of practice equations. Common Core: Math: 3.0A.5 3.0A.6, 4.OA.1