1.   Find 325 + 225.
    A. 540 B. 340
    C. 550 D. 440
    Hint

  2.   Find 463 + 129.
    A. 582 B. 602
    C. 592 D. 572
    Hint

  3.   Find 586 + 307.
    A. 883 B. 983
    C. 893 D. 993
    Hint

  4.   Find 138 + 626.
    A. 754 B. 755
    C. 764 D. 664
    Hint

  5.   Which is true when adding 152 + 629?
    A. First add 9 + 2 to get 11. Regroup 11 ones as 1 ten. The answer is 770. B. First add 9 + 2 to get 11. Regroup 10 ones as 1 ten. The answer is 771.
    C. First add 9 + 2 to get 11. Regroup 10 ones as 1 ten. The answer is 781. D. First add 9 + 2 to get 11. Regroup 11 ones as 1 ten. The answer is 780.
    Hint