Estimating Sums & Differences
Adding Whole Numbers
Subtracting Whole Numbers
Subtracting Across Zeros
Draw a Picture & Write an Equation
100
Estimate by rounding to the nearest hundred. 368 + 137
What is 400 + 100= 500
100
Add. 24,595 + 19,255
What is 43,850
100
Subtract. 716 - 254
What is 462
100
Find the difference. 500 - 177
What is 323
100
Jenny earned $24 from babysitting and $15 for doing her chores. Draw a picture and write an equation to find the total amount Jenny earned.
What is 24 + 15 = 39 l------------ ? -------------l l 24 l 15 l
200
Estimate by rounding to the nearest hundreds. 281 - 172
What is 300 - 200= 100
200
Add. 1,321 + 2,246
What is 3,567
200
Subtract. 1,268 - 429
What is 839
200
Subtract. 502 - 380
What is 122
200
I spent $84 on shoes and $26 on socks. Draw a picture and write an equation to find how much I spent total.
What is 84 + 26 = $110 l------- ? --------l l 84 l 26 l
300
To estimate 2,351 + 8,320 to the nearest thousand, what would you add?
What is 2,000 + 8,000
300
Bell rushed for 206 yards, and Bryant rushed for 62 yards on Sunday. How many total yards did they earn together?
What is 268 yards
300
On the way to the beach, Dad drove 168 miles and Mom drove 191 miles.How many more miles did Mom drive than Dad?
What is 23 more miles
300
3,000 - 1,047
What is 1,953
300
Each school day, Lily sold the same number of tickets for the play. On Monday she sold 4 tickets.How many tickets did she sell altogether in 5 days? Draw a picture and write an equation to solve.
What is 4 x 5 = 20 tickets l--------------------?-----------------l l 4 l 4 l 4 l 4 l 4 l
400
To estimate 962 + 1,523 by rounding to the nearest hundreds, what would you add?
What is 1,000 + 1,500
400
The students collected 74 water bottles, 23 paper towel rolls and 58 cans. How many items did the collect in all?
What is 155 total items collected
400
Ben had $235. He spent $40 on a new game. How much money did he have left?
What is $195 left
400
Julia scored 10,380 points playing a game. Hope scored 9,645 games. How many more points did Julia score than Hope?
What is 735 more points
400
Casey rode 15 rides before lunch at Kennywood and 13 rides after lunch. Each ride requires 3 tickets. What expression represents the number of rides she rode during the day? How many rides did she ride in all?
What is 15 + 13 = 28 rides
500
Which is the best estimate for 7,912 + 7, 410? A. 1,000 B. 14,000 C. 15,000
What is C. 15,000
500
Michael added 3,428 + 5,125. His answer, shown below, is not correct. What did he do wrong? Correctly answer the problem. 3428 + 5125= 8571
What is 8,553. When he added the ones place he got 13, but he wrote the 1 in the answer and regrouped the 3.
500
Michelle handed out flags at Community Day. She started out with 75 and ended with 21. How many flags did she hand out?
What is 54 flags were handed out
500
Kylie set a goal to run 1,000 miles this year, so far she has run 847. How many more miles does she have left to run?
What is 153 more miles to run
500
Mrs. Barker had 62 pencils at the beginning of the month. There were 24 students in her class. At the end of the month, she had 8 pencils left. How many pencils were given out during all month? Draw a picture and solve.
What is 62 - 8 = 54 pencils l-------62-------l l 8 l ? l
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