making 20 to subtract

Sara picked some apples on Monday.

Then she picked 7 more apples on Tuesday.

Sara has 13 apples in all.

How many apples did Sara pick on Monday?

• 20, because 13 + 7 = 20

• 6, because 13 - 7 = 6

• 13, because 7 + 6 = 13

• 5, because 13 - 5 = 8

Tags

CCSS.2.OA.A.1

5 + 6 =

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

2 + 7 =

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

• 9

• 8

• 7

• 6

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

Make 10 to subtract:

17 - 9 =

• 10 - 9 = 1

• 10 - 7 = 3

• 10 - 1 = 9

• 10 - 2 = 8

Jack has 8 pencils on his desk, and he has 5 more pencils in his backpack, how many pencils does Jack have all together?

• 13

• 9

• 15

• 10

Tags

CCSS.2.OA.A.1

• 6

• 7

• 8

• 9

Tags

CCSS.2.OA.A.1

3 birds and 2 more birds. How many birds? 

• 4
• 3
• 5
• 6

Tags

CCSS.1.OA.A.1

Make 10 to subtract:

11 - 8 =

• 10 - 6 = 4

• 10 - 7 = 3

• 10 - 1 = 9

• 10 - 2 = 8

There are 7 frogs in the pond. 4 more frogs jump in. How many frogs are in the pond now?

• 8

• 9

• 10

• 11

Tags

CCSS.2.OA.A.1