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MULTIPLACATION
DIVISION
ESTIMATION
POWER OF 10s
WORD PROBLEMS
100

187 * 9

What is 1,683?

100

156 / 12

 12 R:0

100

Estimate: 368 * 7

400 * 7 = 2, 800

100

100,000 in exponential notation 

What is 105 ?

100

Write a 7-digit number with 

8 in the hundred-thousands,

3 in the hundreds place,

6 in the millions place

2 in the tens place

5 in the ten-thousands place

0sin the other places

6, 850, 320

200

Volume of prism

l= 15ft

w= 5ft

h= 12ft

What is 900 ft3?

200

278 / 11 

 25 R: 3

200

Explain why estimates are important

Sample answer: Estimates help you check you answer. If your estimate and actual answer are close you know your answer makes sense.

200

12 * 107  in standard notation

What is 120,000,000?
200

The distance from Chicago, Illinois to Boston, Massachusetts, by plane is 851 miles. A pilot flew from Chicago to Boston 27 times in one year. How many miles was that?

Estimate first.

Estimate: 900 * 40 = 36, 000

Answer: 31,  487 miles 

300

Volume of prism

B=22 in2

h=35 in

What is 770in3?

300

857 / 21 

40 R:17

300

Estimate 

22 * 58 

20 * 60 = 1,200

300

State the number that is greater. Answer in standard notation.

712 * 106 

or

262 * 107 

What is 2,620,000,000?

300

You need 325 hot dog buns for a school picnic. Buns come in packs of 12. How many packs of hot dogs do you need? 

Quotient: _____ Remainder: ______

Answer: _____ packs 

 Quotient: 27 Remainder: 1

28 packs of hot dog buns

400

47*58

What is 2,726 ?

400

1,847 / 27

68 R:11

400

Estimate 312 / 6

300 / 6 = 50 

400

Expanded form of 6,742,123

What is 6,000,000 + 700,000 + 40,000 + 2,000 + 100 + 20 + 3 ?

400

Courtney has 35 yards to make shirts. She then finds 7 feet of leftover material. How much total material does Courtney have in feet?

*Write a number model and solve the problem

Number model: (35 *3) + 7

Answer: 112 feet of fabric

500

213 * 42

What is 8,946?

500

7, 368 / 61

120 R: 48

500

6,189 / 57

6,000 / 60 = 100

500

Expanded form of 6,742,123 using exponents to show power of 10

What is (6 * 106) + (7 * 105) + (4 * 104) + 

(2 * 103) + (1 *102) + (2 * 101) + (3 *100) ?

500

Nico has collected 567 cans to donate. He can fit 46 cans in each bag. How many bags does Nico need?

*Create a mathematical model and solve the problem.

46  46  46  46  46  46  46  46  46  46  46  46 + 15 

Nico needs 13 bags.