Vocabulary
Rounding
Adding 3 Digits
Adding 4 Digits
Wild Card
100
a number close to the exact number
What is an estimate?
100
79 rounded to the nearest 10
What is 80?
100
124+335=
What is 459?
100
1,234+3,423=
What is 4,657?
100

If Pete studies for 27 minutes on Thursday and 75 minutes on Friday, about how many minutes will he have studied in all?

What is 100 minutes?

200
these symbols show grouping (DO THIS FIRST!)
What is parentheses?
200
189 rounded to the nearest 10
What is 190?
200
473+244=
What is 717?
200
4,876+2,324=
What is 7,200?
200
The number that is 100 less than 9,641.
What is 9,541?
300
this property states that the sum of any number and zero is the number
What is the identity property (of addition)?
300
354 rounded to the nearest 100
What is 400?
300

889+124= Round the sum to the nearest 100.

What is 1,000?

300

5,598 +6,912 =

12,510

300
Estimate. Round each addend to the indicated place value. $88 + $27; tens
What is ($90+$30) $120?
400
this property states that the order in which numbers are added does not change the sum
What is the commutative property (of addition)?
400
7,864 rounded to the nearest 100
What is 7,900?
400

Omar has 654 pieces of Halloween candy and Olivia has 299 piece of candy. If they put their candy together, how much do they have? Write an addition sentence with an unknown. Then solve.

What is 654+299=X, the sum is 953?

400

Abigail has $3,612 in her purple piggy bank. George has saved $2,987. They put their money together to buy plane tickets to Ireland. The total cost for tickets is $6,500. Do they have enough money? Write an addition sentence with an unknown. 

What is yes? They have $6,599.

400
Estimate. Round each addend to the indicated place value. $198 + $147; hundreds
What is ($200+$100) $300?
500
this property states that the way addends are grouped does not change the sum
What is the associative property (of addition)?
500
which is greater, 3,264 rounded to the nearest 10 OR 3,264 rounded to the nearest 100
What is 3,264 rounded to the nearest 100?
500

Spencer covered 182 miles trick-or-treating and Amiee covered 199 miles. It's reasonable that they covered a about 400 miles on October 31. (True or false, defend with evidence)

What is TRUE? 182 is about 200, 199 is about 200. 200 + 200=400

500

Kayla traveled 3,671 miles to find the best Halloween costume. Kyle traveled 5,984 miles. It's reasonable that they covered about 12,000 miles to find the best costumes. (True or false, defend with evidence)

What is FALSE? 3,671 is about 3,700 and 5,984 is about 6,000. 3,700+6,000=9,700 NOT 12,000.

500
Estimate. Round each addend to its greatest place value. 585 + 277=
What is (600+300) 900?
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