Estimating
Estimate the sum of 325 and 624. Use an equation to justify your estimate
330 + 620 =950
OR
300 + 600 = 900
Mr. Gavin catcheds 2940 fish on Monday. On Tuesday he catched 4872 fish. How many fish does he catch in all?
2940 + 4872 = 7,812 fish
Write an equation that represents the story. Then solve.
A small box has 3 drink packets in it.
A large box has n times as many packets.
There are 36 drink packets in a large box.
3 x n = 36
3 x 12 = 36
What is 335+249=
335+249=584
What is Mrs. Gavin's first name?
Bailey
Estimate the sum of 538 and 382 by rounding to the nearest hundred.
500 + 400 = 900
Camilla, Felipe, and Jordan are in a summer reading program. Camilla read for 372 minutes, Felipe read for 210, and Jordan read for 273 minutes. How many book pages did Felipe and Jordan read in all? Show your work
They read for 483 minutes
Write an equation that represents the story. Then solve.
A small box has 8 drink packets in it.
A large box has n times as many packets.
There are 48 drink packets in a large box.
8 x n = 48
8 x 6 = 48
What is 6,273 + 2,482?
8,755
What is Mr. Gavin's first name?
Aaron
Estimate the sum of 273 + 379 by rounding to the nearest ten.
270 + 380 = 650
Sage wants to buy a baseball glove and baseball bat. The glove costs $146, and the bat costs $99. How many dollars does Sage need to save to buy the baseball glove and baseball bat?
$245
Find the sum of 620 and 280. Use place value and find the sums of the hundreds, and tens
600 +200 =800
20 + 80= 100
800+100 = 900
Create a bar diagram to represent this problem: 431 + y = 826. Then find the value of y.
431 + 395 = 826
y = 395
What are the names of Mrs. Gavin's dogs?
Finley and Sadie
Consider the sum of 159, 248, and 323.
Estimate the sum by rounding to the nearest ten
160 + 250 +320 =
730
Tamika scores 728 points in a video game. She scores 427 points for speed. She also scores points for accuracy. How many points does Tamika score for accuracy?
301 points
Find the sum of 458 and 342. Use place value and find the sums of the hundreds, tens, and ones
400 + 300 = 700
50 + 40 = 90
8 + 2 = 10
800
When adding 7,251 and 1,939, what place values need to be regrouped?
The ones place and the hundreds place
How old are Finley and Sadie?
1 and 4