Addition
Subtraction
Subtract Across Zeros
Estimate Sums and Differences
Vocabulary
100
What is 3,567 + 2,341?
5,908
100
What is 394 - 75?
319
100
What is 1,902 - 1,374?
528
100
Estimate the difference by rounding to the nearest ten thousand.
651,354 - 417,823 = ?
650,000 - 420,000 = 230,000
100
What is a sum?
The answer to an addition equation
200
What is 32,602 + 53,129?
85,731
200
What is 5,296 - 4,521?
775
200
What is 80,600 - 16,434?
64,166
200
Estimate the sum by rounding to the nearest thousand.
45,671 + 7,142 = ?
46,000 + 7,000 = 53,000
200
What is a difference?
The answer to a subtraction equation
300
What is 19,634 + 13,768 + 7,926?
41,328
300
A crayon company makes 36,742 red crayons, 12,345 yellow crayons, and 6,921 brown crayons. How many more red crayons are made than yellow and brown combined?
Hint: use addition and subtraction to solve
17,476
300
What is 800,740 - 201,568?
599,172
300
Estimate the difference by rounding to the nearest ten thousand.
1,000,000 - 348,546 = ?
1,000,000 - 350,000= 650,000
300
Which property of addition is shown below?
352 + 423 + 134 = 423 +134 + 352
The Commutative Property
400
Jake had 3,456 Pokemon cards and 15,324 baseball cards. How many cards does Jake have altogether?
18,780
400
The Cycling Club's goal is to ride 8,213 miles by the end of four months. How many more miles do they need to ride in July to meet their goal?
Hint: use addition and subtraction to solve
2,796
400
A gym hold a fundraiser over four weekends in which a team runs laps for donations. The gym's goal is 50,000 laps. Over three weekends the teams ran 9,328 laps, 14,054 laps, and 7,492 laps. How many laps do they need to run the fourth weekend to reach their goal?
19,126 laps
400
About how much greater is the area of the largest sea than the area of the smallest sea? Estimate the difference by rounding to the nearest thousand.
The largest sea is Caprian Sea and that rounds to 168,000 and the smallest sea is the Boravian Sea which rounds to 14,000 so the estimated difference is 154,000.
400
Which property of addition is shown below?
6,793 + (2,593 + 523) = (6,793 + 2,593) + 523
The Associative Property
500
What is the missing digit?
154,?56
+ 27,891
182,547
Find what number is represented by ?
6
500
Donte wrote the subtraction below. What mistake did Donte make? What is the correct answer?
Donte did not regroup correctly in the thousands place. The answer is 237,932.
500
Mary subtracted 502,600 from 164,317. Is Mary's answer correct If not, explain why and what is the correct answer?
Mary's answer is not correct. She did not regroup correctly in the hundred thousands place. The correct answer is 338,283.
500
Game 1 Attendance: 6,723
Game 2 Attendance: 3,260
Game 3 Attendance: 4,180
Estimate the total attendance by rounding each number in the table to the nearest thousand and then add the estimated numbers.
Game 1 = 7,000
Game 2 = 3,000
Game 3 = 4,000
Total = 14,000
500
Which property of addition is shown below?
1,985 + 2,595
= (1,985 + 15) + (2,595 − 15)
= 2,000 + 2,580
= 4,580
The Identity Property