Adding 10 or 100 to a Number (mental math)

378 + 10

• 478

• 388

• 488

• 368

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

500 + 10 =

• 510

• 600

• 490

• 610

Tags

CCSS.2.NBT.A.1

CCSS.2.NBT.A.3

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

Bob plays a game. He scores 473 points. Bob plays again and scores 100 points. How many points did Bob score in both games?

Tags

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

Use mental math to solve. 790 + 100 = ____

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8

Bo gave Simon 40 pieces of dog food. Simon begged Bo for more. Bo gave him 10 more pieces. How many pieces in all did Bo give Simon?

• 30

• 410

• 50

• 140

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

Isabella read 500 words in her JoJo book in the morning. She read 100 more words in her book in the afternoon. How many words will Isabella read in all?

• 400

• 600

• 60

• 700

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

Julianna goes to her grandparents house and plays with 41 animals on Monday. She goes back on Tuesday and plays with 10 more animals. How many animals did she play with in all on both days?

• 50

• 420

• 410

• 51

Tags

CCSS.2.NBT.B.5

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

101 + ___ = 201

• 10

• 100

• 1

• 1,000

Tags

CCSS.2.NBT.A.1

CCSS.2.NBT.A.3

CCSS.2.NBT.B.7

CCSS.2.OA.A.1

____ + 100 = 823

• 600

• 723

• 72

• 541

Tags

CCSS.2.NBT.B.7

CCSS.2.NBT.B.8