Missing Numbers
Rounding and Patterns
Multiply in sequence and estimate.
Exponents
Multiplication
100

Picture One

Missing numbers 4, 9

100

Round to the nearest hundred. 

76, 892

76, 900

100

17 x 100 = 17 x 1 =

17 x 101 = 17 x 10 = 

17 x 102 = 17 x 10 X 10 =

17 x 10= 17 x 10 x 10 x 10 =

17 x 104 = 17 x 10 x 10 x 10 x 10 =

17

170

1,700

17,000

170,000

100

( 6 x 5 ) x 10 4

300, 000

100

453 x 4

1812

200

Picture Two

Missing Numbers: 1, 7

200

Multiply the following: 

600 x 4, 000 = 

2,400, 000

200

Estimate and multiply: 

27, 158 x 4 = 


Estimate: 108, 000

Answer: 108, 632

200

( 7 x 2 ) x 10

1,400,000

200

The Annual Math Challenge has a total of 400 attendees. In each of the 50 rooms available. What is the total number of attendees to the Science Fair?

400 x 50 = 20, 000

300

Picture Three

Missing Numbers: 2; 1; 3,822

300

Round to the nearest one hundred thousand: 

8, 946, 765

8, 900, 000

300

83 x 100 =

83 x 101 =  

83 x 102

83 x 103

83 x 104

83 x 105 = 8

83

830

8,300

83,000

830,000

8,300,000

300

(7 x 7) x 10

7 x 7  = 49

100 = 1

300

A hotel has 10 floors. Each floor has 42 standard rooms. If each standard room can fit 2 guests, what is the maximum number of guests that all the standard rooms can accommodate?

42 x 10 = 420

420 x 2 = 840

400

Picture Four

Missing Numbers: 1; 3; 21, 030

400

Multiply the following

5,000 x 7,000,000 =

35, 000, 000, 000

400

Estimate and multiply: 

4306 x 4 =

16,000

Answer: 17, 224

400

( 9 x 3 ) x 103

27, 000

400

A stadium is divided into equal sections: 2 premium sections and 10 standard sections. A seat at the premium section costs $4 per game. A seat at the standard section costs $2 per game. There are 35 seats in each section. If all the seats in the premium section are sold out for a game, how much will the stadium get from those ticket sales?

35 x 4 = 140

140 x 2 = $280

500

Picture Five

Missing Numbers: 4; 3; 3; 49, 806

500

Round to the nearest ten. 

1, 896

1, 900

500

21 x 10=

21 x 1 = 21

500

( 11 x 5 ) x 107

550, 000,000

500

62 x 23 =

1, 426

M
e
n
u
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500