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Intro to Multiplying. What you “know”. Times tables to ________ Rules for multiplying integers. What we need to understand. There are patterns and tricks that can help us get better at our times tables. There are reasons that the rules for multiplying integers work out like they do.
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What you “know” Times tables to ________ Rules for multiplying integers
What we need to understand There are patterns and tricks that can help us get better at our times tables. There are reasons that the rules for multiplying integers work out like they do. MULTIPLICATION saves us the time and trouble of repeated addition.
The first 3 slides are timed problems from our times tables The faster you answer correctly, the more points you earn.
1. Multiply: 7 x 7 • 35 • 42 • 49 • 56 • 81 Response Grid
2. Multiply: 3 x 12 • 15 • 30 • 32 • 36 • 42 Response Grid
3. Multiply: 5 x 9 • 45 • 50 • 55 • 56 • 72 Response Grid
4. Evaluate: -6 x 4 • -24 • -2 • 2 • 24 Response Grid
5. Evaluate: (-3)x(-7) • -21 • -10 • 10 • 21 Response Grid
6. Evaluate: 10(-2) • -20 • -8 • 8 • 20 Response Grid
7. Which of the following is NOT a multiple of 4? • 124 • 155 • 136 • 240 • 452 Response Grid
What is another way to represent8. 6 + 6 + 6 + 6 + 6 ? • 36 • 6 x 6 x 6 x 6 x 6 • 65 • 6 x 5 • 66,666 Response Grid
9. Each person who joins the club pays $25 in dues. If 4 people join, which of the following gives the total amount of dues?I. 25 + 25 + 25 + 25II. 25 x 4 III. 25 + 4 • I only • II only • III only • I and II, not III • I and III, not II Response Grid
10. Which of the following represents: – 3 – 3 – 3 – 3 ? • . • . • . • . -6 -3 0 -15 -12 -9 -6 -3 0 -15 -12 -9 6 9 12 -3 0 3 6 9 12 -3 0 3 Response Grid