Chapter 2 Review
Stephanie has 15 apples. If I have twice the number of apples, how many do I have?
30
Kathleen wants to buy a winter coat. Macy's is selling the coat for $45 and JC Penny is selling the coat for $62. How much less will it cost Kathleen to buy the coat at Macy's?
$17 less
3x7
21
George goes to the store and buys 3.50 worth of strawberries. His mom asked him to get twice that amount. How much money should George have spent?
$7.00
A manager makes 5 copies of a 324 page document. How many papers were copied?
5,000
Skies the Limit: $319
In the Clouds: $405
A. About 100
B.About 200
C. About 300
D. About 400
About $300
21x6
126
Claire wants to know what 5,000 x 3 is. She guesses it is 1,500. Is she correct? What is the answer?
No she is wrong. The answer is 15,000.
Label this problem with the correct terms:
45x6=270
6: factor
270: product
Franks hot dog stand sold this amount of hot dogs:
Friday: 3,825
Saturday: 1,297
Sunday:4,175
Estimate the number of hot dogs sold by ROUNDING each number in the chart to the nearest thousand and showing the sum.
4,000 + 1,000 + 4,000= 9,000 hot dogs
Mark calculated that the cost for tuition and books for four years of college will be $31,800. Which expression shows an estimate to check if Mark's answer is reasonable.
Tuition: $7,200
Books: $750
A. 10,000x8
B. (7,000x4) + (1,000x4)
C. (8,000x4) + (700x8)
D. 4 x (10,000+1,000)
B. (7,000x4) + (1,000 x 4)
365x4
1,460
3456 x 4=
13,824
Kyle's dad drives 1,211 miles each month. How many miles does he drive in 3 months?
3,633 miles in 3 months
Jim and Rose recorded the number of birds they saw in the park over two summers.
Finches Pigeons
Last Year: 1,219 4,620
This Year: 906 5,287
Estimate how many more birds were seen in the park this year than last year by rounding to the nearest hundred and solving the problem. Use the estimate to check if the answer is reasonable.
400 birds is reasonable
How many zeros will be in the product of 7 x 5,000?
3 zeros
Kate bought shoelaces that cost 7.65 $ each. She wanted to buy 4 of them. How much money will Kate spend?
30.60$
Jane and Michael each multiplied 8 x 490. Michael got the product 3,9200. Jane got 3,920. Who is correct and why?
Each box of postage stamps contains 420 stamps. Juliana bought 6 of the boxes. How many total stamps did she get?
2,520 stamps
Jim and Rose recorded the number of birds they saw in the park over two summers.
Finches Pigeons
Last Year: 1,219 4,620
This Year: 906 5,287
Write and solve equations to find out how many more total birds Jim and Rose saw this year than last year.
354 more birds
Without calculating the answer, please explain how to use patterns of basic facts to find the number of zeros in the product.
7x5=35
7x50=350
7x500=3,500
7x5,000=35,000
What is 5,300x 5
26,500
A mountain in Pennsylvania is 607 feet tall. A ranger walked up AND DOWN 3 times this past week. How many total feet did he climb?
3,642 feet
Mrs. Jones would like to buy a television for her son and her daughter. The television sets cost $232 each. Mrs. Jones estimates that she will spend $460. Is this reasonable?
Yes 232 rounded is 230 and multiplied by 2 is 460.