Chapter 2 Math review

What number is the estimated sum of the four addends shown?

22,785 + 30,499 + 41,359 + 7,624

• 90,000

• 101,000

• 100,000

• 102,000

Select the expression that has a value of 10.

• b + 10, when b = 1

• c + 1, when c = 10

• a + 5, when a = 5

• 3 + f + 2, when f = 7

Which of the following equation shows the Associative Property of Addition?

• (17 + 4) + 9 = 17 + (4 + 9)

• 29 + 0 = 29

• 37 + 23 = 23 + 37

• 77 + 2 + 4 = 4 + 77 + 2

What is the sum of 35,759 and 6,280?

• 41,039

• 41,939

• 42,039

• 98,559

Name the addition property shown by the equation.

(21 + 35) + (15 + 46) = 21 + (35 + 15) + 46

• Associative Property of Addition

• Commutative Property of Addition

• Identity Property of Addition

Align and add.

6,295 + 34,291

• 40,543

• 41,555

• 40,586

• 42,983

Find the two pairs of number that have an estimated sum of 500.

102 239 262 349 450

• 102 and 239

• 239 and 262

• 102 and 349

• 450 and 102

Estimate the sum.

1,432,333 + 4,555

• 1,765,000

• 1,437,000

• 1,436,800

• 1,430,000

Which of the following equations shows the Identity Property of Addition?

• 89 + 45 = 45 + 89

• 77 + 0 = 77

• (43 + 33) + 5 = 43 + (33 + 5)

• 77 + 3 = 3 + 77

Align and add.

8,999 + 345

• 9,344

• 9,348

• 9.234

• 9,657