Lesson 3 Factors as a Factor in Our Strategy Choice

- Let’s reason about strategies we use to multiply.

Warm-up Number Talk: Increasing Factors

Find the value of each expression mentally.

$230 \times 10$
$230 \times 12$
$230 \times 15$
$232 \times 15$

Activity 1 Choose a Multiplication Strategy

Find the value of each expression. Explain or show your reasoning.

$14 \times 3$
$14 \times 101$
$14 \times 25$
$14 \times 9$
$14 \times 136$

Activity 2 Compare Strategies

Find the value of each expression.

$29 \times 7$
$12 \times 45$
$15 \times 199$
$24 \times 154$