Adding and Subtracting from One Whole

3/12 + 4/12

• 7/12

• 6/12

• 12/12

• 1/12

1/4 + 3/4

• 4/4

• 1/4

• 1/8

• 3/8

Add these Fractions

• 2/4

• 3/4

• 4/8

• 1

8/8-3/8

• 5

• 7/8

• 5/8

• 4/8

James have 90 marshmallows in the jar. He adds 382 more. How many marshmallows are now in the jar? 

• 472

• 289

• 340

• 198

Juan has 253 marbles. Ella has 38 more marbles than Juan. How many marbles does Ella have? Ella has _____ marbles.

Solve:
246 + 553 = ?

• 313

• 799

• 809

• 307

516 + 468 =

• 974

• 1,984

• 984

• 986

Lilly finished 3 math problems for morning work. She finished 5 more during math class and 6 more for homework. How many math problems did she complete in all?

• 11

• 8

• 14

• 2

Use mental math to solve.

120 + 42 + 80

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