Fluently adding and subtracting numbers between 20 and 100

114 birds are sitting in a tree. 21 more birds joined. How many birds are in the tree in all?

• 130

• 114

• 21

• 135

Tags

CCSS.2.NBT.B.6

Alisson watched 85 videos on YouTube. Carolina watched 97. How many YouTube videos did the girls watch altogether?

• 162

• 182

• 172

• 1,712

Tags

CCSS.2.NBT.B.6

3. 90 + 21 =

• 105

• 10

• 110

• 100

Tags

CCSS.2.NBT.B.6

What are the partial sums for 71+22

• Tens:7

  Ones:3

• Tens:8

  Ones:3

• Tens:9

  Ones:3

• Tens:6

  Ones:3

Tags

CCSS.2.NBT.B.6

Evelyn runs a startup with 200 employees. Recently, they hired 15 new interns from Charlotte's university. However, due to budget constraints, they had to lay off 10 employees. How many employees does Evelyn's startup have now?

• 205

• 205

• 195

• 185

Tags

CCSS.2.NBT.B.6

90+92

• 182

• 180

• 172

• 192

Tags

CCSS.2.NBT.B.6

tens =

ones =

sum =

Tags

CCSS.2.NBT.B.6

Lincoln School has 156 fourth grade students. Franklin Park has 208 fourth grade students. How many fourth graders are there altogether in both schools?

• 364
• 634
• 436
• 363

Tags

CCSS.2.NBT.B.6

Leo bought 16 red hot wheels. He already had 69 red hot wheels. How many does he have now?

Tags

CCSS.2.NBT.B.6

John scored 86 points in the first round of his video game.  In the second round, he scored 75 points.  How many points did he score in all?

• 170
• 161
• 159
• 300

Tags

CCSS.2.NBT.B.6