# STRATEGIES FOR MULTIPLICATION by lL4X730

VIEWS: 22 PAGES: 5

• pg 1
STRATEGIES FOR
MULTIPLICATION

•   COMPLETE NUMBER STRATEGIES
•   PARTITIONING STRATEGIES
•   COMPENSATION STRATEGIES
•   USING MULTIPLES OF 10 AND 100
•   TWO DIGIT MULTIPLIERS (The area model)
COMPLETE NUMBER
STRATEGIES
Repeated addition: 73 X 4 =
73
+ 73                73
146                73      146
+ 73                73
219                73      146   292
+ 73
292
PARTITIONING STRATEGIES
• Breaking numbers up in a variety of
ways that reflect an understanding of
base 10.
27 X 4              268 X 6
20 X 4 = 80         200 X 6 = 1200
7 X 4 = 28          60 X 6 = 360
108           8 X 6 = 48
1608
COMPENSATION STRATEGIES

Looking for strategies to manipulate
numbers so the calculations are easier
(more familiar).

Double/Half:                27 X 4
3 X 18                      30 X 4 = 120
(3 X 2) X (18 / 2)         - 3 X 4 = 12
6 X 9                             108
TWO DIGIT MULTIPLIERS
(The area model)
See Board

To top