Properties of Addition
Name the property shown below.
395 + 0 = 395.
What is identity property of addition?
Estimate the following subtraction problem to the nearest hundred:
824 - 305 = ?
What is 800 - 300 = 500 ?
Estimate the following addition problem to the nearest 10:
824 + 305 = ?
What is 820 + 310 = 1,130?
Solve the following problem. Use estimation to check your answer.
63 - 47 =
What is 16?
Solve the following problem. Use estimation to check your answer.
58 + 37 =
What is 95?
Name the property shown below.
5 + 39 + 10 = 5 + 10 + 39
What is the commutative property of addition?
Use estimation to solve:
594 - 309 = ?
What is 600 - 300 = 300?
OR
590 - 310 = 280
Use estimation to solve:
793 + 309 = ?
What is 800 + 300 = 1,100 ?
OR
790 + 310 = 1,100
Solve the following problem. Use estimation to check your answer.
481 - 302 =
What is 179?
Solve the following problem. Use estimation to check your answer.
323 + 548
What is 871?
Name the property shown below.
32 + 20 + 71 = 32 + (20 + 71)
What is the associative property of addition?
Round to the nearest hundreds to solve:
655 - 543 = ?
What is 700 - 500 = 200 ?
Round to the hundreds to solve:
698 + 156 = ?
What is 700 + 200 = 900 ?
Solve the following equation. Use estimation to check your answer.
494 - 247 =
What is 247?
Solve the following problem. Use estimation to check your answer.
994 + 546 =
What is 1,540?
Name the property(s) you can use to solve the problem below.
300 + 32 + 100
What is the commutative property and the associative property?
32 + (300 + 100)
Apple sold 905 computers this month. Another company sold 641 computers this year. About how many more computers did apple sell than the other company?
What is 900 - 600 = 300 ?
Use estimation to solve the equation:
391 + 493 = ?
What is 400 + 500 = 900?
OR
390 + 490 = 880
A candy factory started out with 950 boxes of chocolates. They sold 438 boxes. How many did they have left over?
What is 512 boxes?
Solve the following problem. Use estimation to check your answer.
76 + 44 + 17 =
What is 137?
*** DOUBLE JEOPARDY ***
Mrs. Warwick used different properties to rewrite the equation below. Select all the equations Mrs. Warwick might have written.
50 + 320 + 525
a. 525 + 50 + 320 = n
b. 50 + 525 + 0 = n
c. (50 + 320) + 525 = n
d. 525 + 320 + 50 = n
e. 50 + (320 + 525) = n
What is a, c, d, and e?
Use estimation to solve:
852 - 539 = ?
What is 900 - 500 = 400?
Use estimation to solve:
38 + 21 + 91 =
What is 40 + 20 + 90 = 150 ?
Violet decided to save bottle caps to make into a bench. The company needs 650 bottle caps. Violet only has 321 caps. How many more does she need to collect?
What is 329?
The shoe factory decided to total the number of shoes they sold at two different stores in a month. The first store sold 372 shoes and the second store sold 599 shoes. How many shoes did the stores sell altogether?
What is 971 shoes?