Mastering Natural Numbers

What is a natural number?

• Natural numbers are the set of positive integers starting from 1.

• Natural numbers start from 0.

• Natural numbers include negative integers.

• Natural numbers are all integers, both positive and negative.

Identify the natural numbers from the set: { -1, 0, 1, 2, 3 }

• -1, 0, 1

• -1, 2, 3

• 0, 1, 2

• [1, 2, 3]

What is the sum of 7 and 3?

• 5

• 12

• 10

• 8

Subtract 4 from 10. What is the result?

• 8

• 5

• 7

• 6

Multiply 6 by 3. What do you get?

• 18

• 15

• 21

• 12

Identify the natural numbers in this list: { 0, 1, 2, 3.5, 4 }

• [2, 3, 4]

• [1, 2, 4]

• [1, 3, 4]

• [0, 3.5]

Order these natural numbers: 12, 5, 9, 15

• 9, 5, 15, 12

• 15, 12, 9, 5

• 5, 9, 12, 15

• 5, 12, 9, 15

Order the following natural numbers from smallest to largest: 5, 2, 8, 1

• 2, 1, 5, 8

• 8, 5, 2, 1

• 5, 8, 1, 2

• 1, 2, 5, 8

What is 15 + 25?

• 30

• 40

• 35

• 50

If you have 20 apples and give away 5, how many do you have left?

• 15

• 10

• 5

• 25