Basic Addition and Equation Validation

Which expression has a sum of 23?

• 10 + 12

• 14 + 9

• 2 + 19

• 17 + 7

Tags

CCSS.2.OA.C.3

213 + 123 = 336

• True
• False

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

2 + 9 = 3 + ___

Tags

CCSS.1.OA.B.3

4 + 8 = 3 + 10

• True
• False

Tags

CCSS.1.OA.B.3

Mrs. Carmichael and Ms. Gilmour are collecting shells. Mrs. Carmichael collects 64 shells. Ms. Gilmour collects 58 shells. How many shells did they collect in all?

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

5 + 17 = 30 - ___

Tags

CCSS.1.OA.D.8

14 + 20 = ___ + 21

• 12

• 10

• 13

• 34

Tags

CCSS.1.OA.B.3

15 + 6 = 25 - 4

• True
• False

Tags

CCSS.1.OA.B.3

6 + ___ = 14

Tags

CCSS.1.OA.A.1

At Monday night's hockey game, Taylor saved 21 goals. At Tuesday night's hockey game, she save 17 goals. How many more goals did she save on Monday than on Tuesday?

• 38

• 4

• 6

• 10

Tags

CO.MATH.2.2.2.OA.A.1