Patterns with 10's, 100's and 1000's
Estimating Products
Estimating Quotients
Mental math with division and multiplication
Other stuff
100

3 x 7 = 21

30 x 7 = 210

300 x 7 = ______

3000 x 7 = _______

What is 2100 and 21,000?

100

Estimate.   124 x 9 = 

What is 900?

100
Estimate.  328 ÷ 4 = 

What is 80?

100

Multiply.  34 x 8 = 

What is 272?

100

70,289 in Expanded Form.

What is 70,000 + 200 + 80 + 9?

200

35 ÷ 5 = 7

350 ÷ 5 = 70

3500 ÷ 5 = _____

35,000 ÷ 5 = ______

What is 700 and 7,000?

200

Find 2 estimates the product is between.

34 x 6 = 

What is 180 and 240?

200

Find 2 estimates the quotient is between.

4561 ÷ 9 = 

What is 500 and 600?

200

Multiply.  8 x 3 x 50

What is 1200?

200
The value of the underlined digit.  178,945

What is 8,000?

300

Ms. B taught 400 students over 8 years. if she taught the same number of students each year, this number is how many years would she have taught in order to teach 4000 students.

What is 500 Years?

300

Estimate.  271 x 4 = 

What is 1200?

300

Estimate.  3645 ÷ 9 = 

What is 400?

300

Divide.  420 ÷ 6

What is 70?

300

Sum.  134,973 + 7,488 = 

What is 142,461?

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