Math 2.1 Patterns in Addition REVIEW

Which equation shows the number of peppers?

• 5 + 5 = 10

• 3 + 5 = 8

• 5 + 5 + 5 + 5 = 20

• 3 + 3 + 3 + 3 + 3 = 15

Is there an odd or even number of hot air balloons?

• odd

• even

There are 4 rows of 3 cookies on the plate.

How many cookies are on the plate?

• 15

• 12

• 1

• 7

Select the ARRAY that represents the expression:

2 + 2 + 2 + 2

• 
• 
• 
• 

Find the SUM.

7 + 9 = ?

• 13

• 14

• 15

• not given

Is there an even or odd amount of bees?

• odd; 4 + 4 = 8

• even; 4 + 4 = 8

• odd; 4 + 4 + 1 = 9

• even; 4 + 4 + 1 = 9

Which equation could be represented with an ARRAY?

• 7 + 7 = 14

• 4 + 3 + 2 = 9

• 3 + 3 + 1 = 7

• 2 + 2 + 2 + 3 + 2 = 11

Find the difference.

20 - 6 = ?

• 26

• 16

• 14

• not given

Caylee has 13 ring pops.

Her brother gives her 7 more ring pops.

How many ring pops does Caylee have now?

• 6

• 20

• 19

• 83

Is there an even or odd number of squares?

Explain your answer.

• Odd; each rectangle has a partner.

• Even; each rectangle has a partner.

• Odd; each rectangle does not have a partner.

• Even; each rectangle does not have a partner.