1.   Estimate. Round to the tens.

    A. 30 + 20 = 50 B. 50 + 20 = 70
    C. 20 + 10 = 30 D. 30 + 10 = 40
    Hint

  2.   Find $45 + $28.
    A. $63 B. $17
    C. $83 D. $73
    Hint

  3.   Find the number that completes the number sentence. Then identify the property or rule.

12 − __ = 12

    A. 0; Associative Property of Addition
    B. 12; Commutative Property of Addition
    C. 0; Identity Property of Addition
    D. 0; Subtraction Rule
    Hint

  4.   Add mentally.

32 + 18 + 40

    A. 100 B. 90
    C. 80 D. 70
    Hint

  5.   Estimate. Round to the indicated place value.

221 + 32; tens

    A. 220 + 30 = 250 B. 230 + 30 = 260
    C. 200 + 30 = 230 D. 220 + 40 = 260
    Hint

  6.   Logan wants to save for a video game system. The table shows what each costs. About how much will he have to save?

Item

Cost

Game system

$209

Game

$49

    A. $300 + $100 = $400 B. $200 + $50 = $250
    C. $300 + $50 = $350 D. $200 + $100 = $300
    Hint

  7.   Solve.

    A. 1,158 B. 1,068
    C. 1,268 D. 1,168
    Hint

  8.   Solve.

    A. 7,514 B. 7,154
    C. 6,514 D. 8,514
    Hint

  9.   Which of the following differences will need regrouping when you subtract?
    A. 772 − 571 B. 772 − 578
    C. 778 − 578 D. 778 − 508
    Hint

  10.   Subtract.

    A. 473 B. 201
    C. 211 D. 271
    Hint

  11.   Solve.

    A. $1.10 B. $0.90
    C. $1.90 D. $0.10
    Hint

  12.   Solve.

    A. 4,455 B. 5,645
    C. 4,445 D. 4,355
    Hint