2.NBT.8: Mental Math Strategies - Grade Level Worksheet

I can mentally add 10 or 100 to any number.

Problem 1

274 + 100 = _____

\n

Problem 2

623 + 100 = _____

\n

Problem 3

196 + 100 = _____

\n

Problem 4

550 + 100 = _____

\n

Problem 5

565 + 100 = _____

\n

Problem 6

234 + 10 = _____

\n

Problem 7

602 + 10 = _____

\n

Problem 8

583 + 10 = _____

\n

Problem 9

683 + 10 = _____

\n

Problem 10

463 + 10 = _____