Standard Algorithm
Rounding
Chunking
99 Strategy
Word Problems
100

Calculate 2345 + 1234 using the standard algorithm.

3,579

100

Round 6.23 to the nearest tenth

6.20
100
Calculate the following using the chunking method (breaking it down by place value). 124 + 349.

473.

100

1,000 - 643?

357.
100

Hudson had 15.00 dollars and bought a pack of Pokemon cards for 11.97. How much money does Hudson have left over after purchasing this card pack?

Hudson has $3.03 left over after purchasing one pack of Pokemon cards.

200

What is 9856 - 3326?

6,530

200

Round 9.67 to the nearest tenth.

9.7

200

597 - 287?

310.

200

10,000 - 5743?

4,257.

200

Ms. Gohl bought some classroom supplies for the class. A stapler worth $11.19, some paint for $59.97 and some paper worth $6.50. How much did Ms. Gohl spend in total on classroom supplies?

Ms. Gohl spent $77.66 total on classroom supplies.

300

What is 2781 + 9179?

11,960

300

Round 1,345 to the nearest thousands.

1,000

300

664 + 267?

931.

300
8000 - 3538?
4,462.
300

Gursee and Ali were selling cookies to raise money for remembrance day. Ali raised $11.67 by selling chocolate chip cookies and $45.50 selling mint cookies. Gursee raised $27.67 selling mint cookies and $29.15 selling chocolate chip cookies. Who raised more money?

Ali raised $57.17 dollars and Gursee raised $56.82. Therefore, Ali raised more money!

400

What is 10,546 - 4,964?

5,582

400

Round 163.053 to the nearest hundredth.

163.05

400

1556 + 7150?

8,706.

400

100,000 - 55,706?

44,294.

400

Mr. MacGregor goes into Indigo with $100,000 dollars. After buying some household objects, books, and of course some Starbucks, he spends $2,448.45. How much money does Mr. MacGregor have left over?

97,551.55

500
What is 425.383 + 953.62?

1,379.003

500

Round 4256.335 to the nearest hundred.

4,300.

500

52.65 - 30.35?

22.30
500

700,000 - 129,039?

570,961.

500

Mabel was given a PS5, tickets to Disneyworld and the latest Harry Potter book for Christmas (wow… lucky her). If Mable’s mother had a Christmas budget of $1,400.00, how much money does she have left after purchasing these gifts if these are the costs?

- PS5: $857.35

- Book: $32.85

- Disney Tickets: $229.87.

Mabel's mother has $279.93 left over after spending 1,120.07 on the gifts.

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