ZMath 150  - Unit 1: Whole Number Addition
Identify the addition property used in each step for problems #1 through #3.

1) (6 + 17) + 14 + 0 simplifies to (6 + 17) + 14

2) (6 + 17) + 14 can be written as (17 + 6) + 14

3) (17 + 6) + 14 can be grouped as 17 + (6 + 14)

4) What is the sum of (6 + 17) + 14 + 0?

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For problems #5 through #7, use the addition properties to compute mentally. Explain how you solved the problem, and then state the answer.

5) 15 + 22 + 35

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6) 30 + 0 + 70 + 49

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7) (7 + 49) + 23 + 0

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For problems #8 through #10, estimate the sum, and then find the sum. State both the estimate and the actual sum. Do not use a calculator to compute.

8) 346 + 298 + 564

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9) 4239 + 2879

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10) 63,672 + 22,974

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11) Find the sum: 300,000 + 40,000 + 5,000 + 200 + 90 + 4

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12) Using these numbers: 3, 23, 34, 47, 55, 68, 77, 98, find two numbers that total 100.

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13) Alesha’s 4-H group donated their time to help rid their county’s roads of beverage cans that had been tossed along the side of the roads. They collected 127 on Monday, 193 on Tuesday, and 211 on Wednesday. How many cans in all did they collect?

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Use this table for problems #14 and #15.

14) Determine the total miles for a round trip between Morristown and Columbus.

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15) Make up a problem that uses the data in the table.

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Review

16) Melinda’s grandma baked apple crisp for her. It took 15 minutes to prepare and 15 minutes to cool. She put the apple crisp in the oven at 1:25 p.m. and removed it at 2:00 p.m. How long did Melinda have to wait until the apple crisp was ready? Express the answer in hours and minutes.

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17) Write the word name for 782,344,300. (An example: 5,234, 211 would be 5 million, 234 thousand, 211)

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18) Write the standard form for 46 million, 647 thousand, 9 (An example: the standard form for 549 thousand, 11 is 549,011)

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19)

Find the missing number.

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20) Write the expanded form for 48,243. (An example: the expanded form for 3,422 is 3000 + 400 + 20 + 2)

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21) Write the number that is 10,000 greater than 672,388.

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22) Put these numbers in order from least to greatest.

23)

What is the total distance around this rectangle?

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24) Ricky and his three friends ordered a hamburger, french-fries, and a soft drink which cost $3.67 for each combo. How much was the total bill?

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25) What number is 5 more than 9999?

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