- (5 min)Mental Math
- What is 8 x 7 - 2? [54]
- Start with 26, add 10, then subtract 5 [31]
- What is .5 + .5? [1]
- What is 9 x 5 + 10? [55]
- Start with 15, subtract 3, then divide by 3 [4]

- (5 min) Review of selected problems from Homework # 1 (<= 3
problems)

- (10 min) Discussion of Decimal multiplication
Rules:

- Multiply the numbers, ignoring the decimal points.
- Add the number of digits to the RIGHT of the decimal point in both numbers.
- Put the decimal point in the answer with the right number of digits to the right of the decimal point
- DON'T LINE UP THE DECIMAL POINTS!!

4.2 42. .42 42. x 1.1 x .11 x .11 x 11. ----- ------ ---- ---- (Class Interaction: Get students to work some of these problems on the board)

- (Remainder of class)In-class exercise

- Hand out homework to students as they successfully complete the in-class exercise