1.   Grayson ran 23 miles in his first week of an exercise program. The second week, he ran 28 miles. How many miles did he run altogether?
    A. 51 miles B. 61 miles
    C. 41 miles D. 52 miles
    Hint
  2.   Find 51 − 23.
    A. 18 B. 38
    C. 28 D. 74
    Hint
  3.   Find the number that completes the number sentence. Then identify the property or rule.

43 + ∅ = 43
    A. 0; Associative Property of Addition
    B. 12; Subtraction Rule
    C. 0; Commutative Property of Addition
    D. 0; Identity Property of Addition
    Hint
  4.   Add mentally.

18 + 41 + 12
    A. 71 B. 82
    C. 61 D. 81
    Hint
  5.   Estimate. Round to the indicated place value.

$72 + $12; tens

    A. $70 + $15 = $85 B. $70 + $10 = $80
    C. $75 + $12 = $87 D. $80 + $10 = $90
    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?

ItemCost
Game system$209
Game$49
    A. $200 + $50 = $250 B. $300 + $100 = $400
    C. $300 + $50 = $350 D. $200 + $100 = $300
    Hint
  7.   Find the sum.
    A. 403 B. 303
    C. 393 D. 503
    Hint
  8.   Find the sum.
    A. 816 B. 916
    C. 826 D. 806
    Hint
  9.   Which of the following differences will need regrouping when you subtract?
    A. 778 − 578 B. 772 − 571
    C. 772 − 578 D. 778 − 508
    Hint
  10.   Find the difference.
    A. 4,254 B. 5,254
    C. 5,256 D. 5,264
    Hint
  11.   Find the difference.
    A. 159 B. 59
    C. 141 D. 61
    Hint
  12.   Subtract.
    A. 328 B. 418
    C. 318 D. 317
    Hint