Interpret Number Lines

19-1=18 19-18=1 18+1=19

• 19-1=18

• 19-18=1

• 18+1=19

What number should go in the green box?

• 50

• 65

• 70

• 75

What number comes in between?

• 18

• 16

• 19

• 20

Choose the correct symbol.

• 
• 
• 

What is between 40 and 42?

• 41

• 39

• 14

59, ?, 61

• 60

• 50

• 62

What number comes after?

• 98

• 97

• 96

• 100

Which number should go in the red box? Notice that the interval is 5.

• 5

• 12

• 7

• 10

Which number should go in the red box?

• 160

• 15

• 159

• 12

Which number should go in the red box?

• 355

• 400

• 350

• 380