Schulze:Multi-Digit Multiplication

Powers of 10

100

6 x 10^{3 =} 

What is 6 x 10^3  = 6,000

200

10⁴ x _______ = 7,000

 What is 10⁴ x 7 = 7,000

300

10¹ x 4 =  

What is 40 

400

8 x ________ = 80,000

What is 10⁴ or 10,000

500

2 x 10⁵ = 

What is 200,000

2 or 3 digit by 1 digit

100

15 x 2 = 

What is 30

200

25 x 5 = 

What is 125 

300

135 x 7 = 

What is 945

400

765 x 4 = 

What is 3,060

500

442 x 3 = 

What is 1,326

2 digit or 3 digit by 2 digit

100

25 x 25 = 

What is 625 

200

32 x 51 = 

What is 1,632

300

874 x 39 = 

What is 34,086

400

512 x 54 = 

What is 27,648

500

99 x 89 = 

What is 8,811

Multiplying by Whole Numbers with Zeros

100

140 x 7 = 

What is 980

200

109 x 57 = 

What is 6,213

300

580 x 10= 

What is 5,800

400

605 x 25 

What is 15,125

500

310 x 12 = 

What is 3,720

Vocab/Word Problems

100

30 x 40 is a __________ estimate for 28 x 37

What is an OVERestimate 

200

True or False: Estimating is important because it lets us know if our answer is reasonable/makes sense

What is True 

300

The answer to a multiplication problem is called 

What is a product

400

When using the "box method", the numbers you get in the boxes from multiplying are called ________

What is Partial Products 

500

40 x 20 is an _________ estimate for 43 x 22

What is an UNDERestimate