Gr3-Lesson 10.1

What is the product of 30 X 4 = ?

• 120

• 12

• 34

7 x 50 = ?

• 350

• 35

• 57

Chose the equation

• 2 X 50 =100

• 50 + 100 =150

8 x 20 = ?

• 16

• 160

• 28

60 X 7 = ?

• 420

• 42

• 67

chose the equation

• 5 X 50 = 250

• 4 X 50 = 200

What do we call this strategy ?

• Open number line or Skip counting

• Model with base ten blocks

What do we call this strategy?

• Model with base ten blocks

• Mental math

What do we call this strategy ?

• Mental math

• Open number line

9 X 9 = ?

• 81

• 18