adding and subtracting

Ellie the elephant weighs 905 pounds.  Her baby elephant Kirby weighs  335 pounds.  How much more does Ellie weigh than Kirby? 

• 570
• 650
• 610
• 250

There were 323 postcards on the table. Morgan and Stephen use 125 of them. How many postcards were left?

• 198 postcards
• 0
• 448
• 498

• 2,889
• 3,179
• 14,579
• 3,679

Patty has 4,817 marbles. She gave away 2,529 of her marbles. How many marbles does she have left?

• 1,446 marbles
• 2,288 marbles
• 2,312 marbles
• 2,298 marbles

Solve:
9,376 + 2,548 = ?

• 11,924
• 11,923
• 11,814
• 6,828

Solve:  16,875 + 26,730 = ?

• 43,605
• 60,405
• 34,405
• 56,403

A farmer harvested 2,736 bushels of corn on Thursday and 1,283 bushels of corn on Friday. How many bushels of corn did the farmer harvest altogether?

• 3,827
• 7,261
• 4,019
• 1,362