Missing Numbers
Picture One
Missing numbers 4, 9
Round to the nearest hundred.
76, 892
76, 900
17 x 100 = 17 x 1 =
17 x 101 = 17 x 10 =
17 x 102 = 17 x 10 X 10 =
17 x 103 = 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
( 6 x 5 ) x 10 4
300, 000
453 x 4
1812
Picture Two
Missing Numbers: 1, 7
Multiply the following:
600 x 4, 000 =
2,400, 000
Estimate and multiply:
27, 158 x 4 =
Estimate: 108, 000
Answer: 108, 632
( 7 x 2 ) x 105
1,400,000
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
Picture Three
Missing Numbers: 2; 1; 3,822
Round to the nearest one hundred thousand:
8, 946, 765
8, 900, 000
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
(7 x 7) x 100
7 x 7 = 49
100 = 1
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
Picture Four
Missing Numbers: 1; 3; 21, 030
Multiply the following
5,000 x 7,000,000 =
35, 000, 000, 000
Estimate and multiply:
4306 x 4 =
16,000
Answer: 17, 224
( 9 x 3 ) x 103
27, 000
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
Picture Five
Missing Numbers: 4; 3; 3; 49, 806
Round to the nearest ten.
1, 896
1, 900
21 x 100 =
21 x 1 = 21
( 11 x 5 ) x 107
550, 000,000
62 x 23 =
1, 426