Understanding Two-Digit Numbers

What is the smallest two-digit natural number?

• 15

• 20

• 10

• 11

How many two-digit natural numbers are there?

• 90

• 80

• 70

• 100

Write the smallest two-digit natural number in words.

• ten

• nine

• twenty

• eleven

Count the two-digit natural numbers from 10 to 20.

• 15

• 21

• 11

• 12

Identify the first two-digit natural number.

• 11

• 10

• 15

• 20