1. Add using the partial-sums addition method.
2. Add using the partial-sums addition method.
3. Make a magnitude estimate. Circle the appropriate box.
4. The map scale on a map of the United States is inch represents 50 miles. If Celine measured the distance between two cities to be 1 inch, what should she write as the actual distance between the two cities?
5. Explain why making a quick estimate of an answer before solving a problem would be helpful. Give an example.
6. Write 626.063 in expanded notation.
7. Fill in the blanks.
Demetrius walked 2,000 feet to the corner store in the rain. He wanted his friend to feel sorry for him. He said, " I just walked _____ inches to the store. And that was only one way!" His friend said, " That’s not very far. It is only ______yards."
8. Write 431,543 in expanded notation.
9. Make a magnitude estimate. Circle the appropriate box.
10. Identify the error and correct the multiplication problem. Partial Products
11. Subtract using the trade-first subtraction method.
12. Add using the partial-sums addition method.
13. Write the number that has Place Value
1 in the ones place,
4 in the thousands place,
7 in the ten-thousands place,
5 in the tenths place,
and 8 in all of the remaining places. ______, ______. ____
14. Jack’s great-grandmother was born in 1910. His family had a big party for her birthday in 1996. There were 45 family members at the party. How old did Jack’s great-grandmother turn on her birthday in 1996?
a. List the numbers needed to solve the problem.
b. Describe what you want to find.
c. Write an open sentence.
d. Write the solution.
e. Write the answer.
15. Subtract using the trade-first subtraction method.
16. Chloe and her friends had the following scores on a math test.
28, 8, 10, 10, 10, 8, 19, 10, 13, 3, 15
For this set of data, find the maximum, the minimum, the range, the mode, and the median.
17. Subtract using the trade-first subtraction method.
18. Circle the word you would choose to describe the chance of this event happening:
An elephant will walk through the door to our classroom today.
Explain your answer.
certain very likely likely unlikely very unlikely impossible
[1] 98.81
[2] 1,009
[3] magnitude estimate: 100s
Answers may vary. 24.3 can be estimated as 25 and 4.55 can be estimated as 5.
[4] 400 mi
[5] Estimate: Calculated answer:
Explanation may vary. Sample answer: By making an estimate, you would know that your answer was wrong because the estimate and the answer would be very different.
[6]
[7] 24,000; 666.67
[8]
[9] magnitude estimate: 1,000s
Answers may vary. 78 can be estimated as 80 and 16 can be estimated as 20.
[10] It should be 1,200 in the first row instead of 120.
[11] 272
[12] 306.6
[13] 74,881.5
[14] a. 1910, 1996
b. age of Jack’s great-grandmother
c.
d.
e. 86 years
[15] 327.07
[16] maximum: 28; minimum: 3; range: 25; mode: 10; median: 10
[17] 69.45
[18] impossible. Explanations will vary.