Sum Difference Estimate Review

What does difference mean?

• Add

• Subtract

What does sum mean?

• Add

• Subtract

The words 'approximately' and 'about' give you clues to-

• find the exact answer

• find an estimated/ rounded answer

3,568 + 1,431=

• 4,999

• 4,888

• 4,777

• 4,666

2,388 + 956 =

• 3,244

• 3,443

• 3,344

8,987 - 5,852 =

• 2,135

• 1,343

• 3,135

2,115 - 1,376 =

• 739

• 678

• 291

*Estimate the sum:

5,248 + 2,712

• A little less than 8,000

• A little more than 8,000

• A little less than 7,000

• A little more than 7,000

*Choose the equation that has an estimated difference of 5,000 when rounded to the nearest thousand.

• 9,872 - 5,755

• 7,389 - 2,465

• 6,487 - 2,394

Select all the situations that requires an exact answer

• Krispie Kreme has 678 donuts. Dunkin has 192 donuts. Approximately how many donuts are in both shops?

• Kyler wants to know the difference between 281 and 29. What is the difference between these two numbers?

• Mable and Sasha have 89 necklaces altogether. About how many more necklaces do they need in order to have 100?

• There are 78 apples at Walmart. There are 12 apples at Target. If I bought all of the apples, How many apples would I have in total?