Adding and Subtracting

Vocab

100

What property tells you the addends can be regrouped and the sum stays the same. 

Associative Property of Addition

200

What property tells you that the sum of any number and zero is that number. 

Identity Property of Addition

300

A symbol or letter that stands for a number is what?

A Variable

400

Operations that undo each other are called what?

Inverse Operations

500

What property tells you that you can add in any order and the sum remains the same?

Commutative property of Addition

Estimation

100

Estimate the sum

  5323 + 2611=?

(estimate to the biggest place value)

8,000

200

Estimate the Sum

4,225 + 98 = ?

(estimate to the biggest place value)

4,300

300

Estimate the Difference:

95,487 - 61,628

(estimate to the biggest place value)

40,000

400

Estimate the Difference: 

24,300 - 10,125= ?

(estimate to the biggest place value)

10,000

500

Estimate the sum: 

49,761 + 59,499=?

(estimate to the biggest place value)

110,000

Adding & Subtracting Patterns

100

Identify the pattern in the following set of numbers. Your answer must include "add" or "subtract" and the number it changes by.

357,910   357,900  357,890 

Subtract 10

200

Identify the pattern in the following set of numbers. Your answer must include "add" or "subtract" and the number it changes by

34  134  234

Add 100

300

Identify the pattern in the following set of numbers. Your answer must include "add" or "subtract" and the number it changes by

6,574   6,572   6,570  

Subtract 2

400

Identify the pattern in the following set of numbers. Your answer must include "add" or "subtract" and the number it changes by

1,234,578   1,334578   1,434,578

Add 100,000

500

Identify the pattern in the following set of numbers. Your answer must include "add" or "subtract" and the number it changes by

678,964    668,964   658,964

Subtract 10,000

Add

100

Find the Sum:

14,312 + 9,617 = ?

23,929

200

Find the sum:

5,555 + 7,412 = ?

12,967

300

Find the sum:

30,080 + 19,187=?

49,267

400

Find the sum:

257,558 + 605,131= ?

862,689

500

Find the sum:

29,634 + 12,958 + 6,835 = ?

49,427

Subtract

100

Find the Difference:

9,128 - 3753= ?

5,375

200

Find the Difference:

4,707 - 2,016 = ?

2,691

300

Find the Difference:

30,900 - 22,855= ?

8,045

400

Find the Difference:

85,968 - 74,084 = ? 

11,884

500

Find the Difference:

31,030 - 27,426= ?

3,604