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3-by-2 Boogaloo
S T M8
Quick Multiplication
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Name That Property
100
300 X 20
6000
100
Estimate 42 X 21
40 X 20 = 800
100
6 X 7
42
100
3 X ___ = 30
10
100

16 x 1 = 16

Identity

200
125 X 10
1250
200
Estimate 56 x 10
60 x 10 = 600
200
8 X 9
72
200
5 X ___ = 500
100
200

5 x 0 = 5

Zero

300
425 X 12
5100
300
Estimate 38 X 72
40 X 70 = 2800
300
8 X 6
48
300
___ X 100 = 700
7
300

8 x 5 = 5 x 8

Commutative

400
128 X 24
3072
400
Estimate 35 X 35
40 X 40 = 1600
400
4 X 8
32
400
21 x ___ = 210,000
10,000
400

(3 x 4) x 6 = 3 x (4 x 6)

Associative
500
567 X 89
50,463
500
Estimate 63 X 32
60 X 30 = 1800
500
5 X 6
30
500
__ x (6 + 7) = (3 x 6) + (3 x 7)

3

500

5 x (3 + 8) = (5 x 3) + (5 x 8)

Distributive