Unit 5: Addition and Subtraction within 20 Pre-Assessment

Solve the equation using the number path on your desk.

12 + 4 = __

Tags

CCSS.2.OA.A.1

Solve the equation using the number path on your desk.

14 - 6 = _

Tags

CCSS.2.OA.A.1

Draw a math picture AND an equation for this story problem.

Ted had 16 shells. Ken gave him 2 more. How many shells does Ted have now?

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.B.3

Choose ONLY the equations that mean the same thing as 10.

• 5 + 5

• 6 + 3

• 7 + 3

• 10 + 0

• 2 + 7

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Alan counted 6 birds sitting on his fence. 3 more birds came to sit on the fence. How many birds are sitting on Alan's fence now? ​ (a)   Then 2 of the birds flew away. How many birds are sitting on Alan's fence after the 2 birds flew away? ​ (b)  

• 9
• 7
• 5
• 8
• 6
• 1

Tags

CCSS.1.OA.A.1

Draw a math picture AND an equation for the story problem.

Tom had 15 toy trucks. His little brother has 5 more than him. How many trucks does his little brother have?

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.D.8

Draw a math picture AND an equation for the story problem.

Beth has 12 stickers. Her mom gave her some more. Now she has 18 stickers. How many did her mom give her?

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.D.8

CCSS.1.OA.B.4

Sally has 20 pencils. She gave each of her classmates a pencil. Now she has 5 left. How many did she give away?

Tags

CCSS.1.OA.A.1

CCSS.1.OA.C.6

CCSS.1.OA.D.8

CCSS.1.OA.B.4

Complete the story problem below using the addends from the equation at the bottom.

Kim saw ​ (a)   dogs at the store. Her mom saw​ (b)   more at the store. How many did they see all together?

16 + 4 = 20

• 16
• 4
• 20
• 13
• 15
• 0

Tags

CCSS.2.OA.A.1