# Numbers To 20

In this article, we will learn Numbers to 20 and focus on:

- Counting to 20
- Reading and writing numbers in numerals and words
- Comparing and ordering of numbers

## 1. Counting to 20

- 10 and 1 make 11 or Eleven
- 10 and 2 make 12 or Twelve
- 10 and 3 make 13 or Thirteen
- 10 and 4 make 14 or Fourteen
- 10 and 5 make 15 or Fifteen

- 10 and 6 make 16 or Sixteen
- 10 and 7 make 17 or Seventeen
- 10 and 8 make 18 or Eighteen
- 10 and 9 make 19 or Nineteen
- 10 and 10 make 20 or Twenty

## 2. Reading and writing numbers in numerals and words

**Question 1: **

Fill in the blanks with the correct numerals.

Numerals |
Words |

11 | |

12 | |

13 | |

14 | |

15 | |

16 | |

17 | |

18 | |

19 | |

20 |

**Answer:**

Numerals |
Words |

11 | Eleven |

12 | Twelve |

13 | Thirteen |

14 | Fourteen |

15 | Fifteen |

16 | Sixteen |

17 | Seventeen |

18 | Eighteen |

19 | Nineteen |

20 | Twenty |

**Question 2:**

There are __________ girls in the picture below.

- 11
- 12
- 13
- 14

**Answer:**

(2) 12

**Solution: **

There are 10 girls in the box. Count on starting from 10:

11, 12.

**Question 3: **

There are __________ ladybugs in the picture below.

- 15
- 18
- 19
- 20

**Answer:**

(1) 15

**Solution: **

There are 10 ladybugs in the box. Count on from 10:

11, 12, 13, 14, 15.

**Question 4: **

Count and write the number of stars in words.

- Eleven
- Thirteen
- Fifteen
- Eighteen

**Answer:**

(1) Eleven

**Solution: **

There are 10 stars in the box. Count on from 10: 11.

**Question 5: **

Count and write the number of butterflies in words.

- Twelve
- Sixteen
- Seventeen
- Nineteen

**Answer:**

(3) Seventeen

**Solution: **

There are 10 butterflies in the box. Count on from 10:

11, 12, 13, 14, 15, 16, 17.

**Question 6: **

Which of the following sets shows thirteen cookies?

**Answer:**

(3)

**Solution: **

The first box has 11 cookies, the second box has 12 cookies, the third box has 13 cookies, and the last box has 14 cookies.

**Question 7: **

Which of the following sets does not show eighteen items?

**Answer: **

(1)

**Solution: **

Set 1 has 15 items. Set 2, 3, and 4 have 18 items each.

**Question 8: **

What is the missing number?

- 9
- 11
- 14
- 15

**Answer:**

(2) 11

**Solution: **

Since the numbers are increasing, we count on starting from 10:

10, 11, 12, 13.

**Question 9: **

What are the missing numbers?

- 14, 15
- 15, 16
- 16, 17
- 15, 17

**Answer:**

(4) 15, 17

**Solution:**

Since the numbers are increasing, we count on starting from 15:

15, 16, 17, 18.

**Question 10: **

What is the missing number?

- 15
- 16
- 17
- 18

**Answer:**

(4) 18

**Solution: **

Since the numbers are decreasing, we count back starting from 20:

20, 19, 18

**Question 11: **

What are the missing numbers?

- 17, 14, 13
- 17, 13, 14
- 13, 14, 17
- 17, 19, 20

**Answer:**

(1) 17, 14, 13

**Solution: **

Since the numbers are decreasing, we count back starting from 17:

17, 16, 15, 14, 13

**Question 12: **

What are the missing numbers?

- Sixteen, Fifteen
- Fifteen, Sixteen
- Nineteen, Twenty
- Twenty, Nineteen

**Answer:**

(4) Twenty, Nineteen

**Solution:**

Take note that this question is given in word form. Start by writing the numerals below 18 and 17. Since the numbers are decreasing, we count back starting from 20:

20, 19, 18, 17

## Can you spot them?

Can you count the total number of butterflies in the picture below?

Do not forget to count the butterflies that are partially hidden!

- 14
- 16
- 18
- 19

**Answer:**

(2) 16

## 3. Comparing and ordering numbers

Let’s match and compare.

There are __________ plates than buns.

There are __________ buns than plates.

Let’s match them and check.

We have two extra plates. These two plates do not have a bun.

Therefore, we can say that:

There are __2 more__ plates than buns.

There are __2 fewer__ buns than plates.

**Question 1: **

Let’s match and compare.

- Set __________ has more.
- __________ is greater than __________.
- Set __________ has fewer.
- __________ is smaller than __________.
- There are __________ more worms than birds.
- There are __________ fewer birds than worms.

**Answer:**

- Set
__B__has more. __18__is greater than__11__.- Set
__A__has fewer. __11__is smaller than__18__.- There are
__7__more worms than birds. - There are
__7__fewer birds than worms.

**Solution: **

Match each bird to a worm. We notice that Set A has 11 birds and Set B has 18 worms.

**Question 2: **

Look at the picture below.

There are __________ boys.

- 11
- 12
- 14
- 17

**Answer:**

(2) 12

**Question 3: **

There are __________ doughnuts.

- Twelve
- Thirteen
- Fifteen
- Sixteen

**Answer: **

(4) Sixteen

**Question 4: **

There are __________ more doughnuts than boys.

- 1
- 2
- 3
- 4

**Answer:**

(4) 4

**Solution: **

We have 12 boys and 16 doughnuts. The difference will be \(16 − 12 = 4\).

**Question 5: **

There are __________ fewer boys than doughnuts.

- 1
- 2
- 3
- 4

**Answer:**

(4) 4

**Solution: **

There are 4 more doughnuts than boys, therefore, there are 4 fewer boys than doughnuts.

**Question 6: **

Count the cubes and answer the following.

There are __________ more __________ cubes than __________ cubes.

- 8, black, pink
- 8, pink, black
- 7, black, pink
- 7, pink, black

**Answer:**

(4) 7, pink, black

**Solution: **

There are 19 pink cubes and 12 black cubes.

Let’s find out the difference in the number of pink cubes and black cubes.

\(19 - 12 = 7\)

Therefore, there are __7__ more __pink__ cubes than __black__ cubes. Similarly, there are __7__ fewer __black__ cubes than __pink__ cubes.

**Question 7: **

Look at the picture.

There are __________ strawberry ice creams than chocolate ice creams.

- 2 more
- 2 fewer
- 3 more
- 5 fewer

**Answer:**

(2) 2 fewer

**Solution: **

There are 13 strawberry ice creams and 15 chocolate ice creams.

Let’s find out the difference in the number of strawberry ice creams and chocolate ice creams.

\(15 - 13 = 2\)

Therefore, there are __2 fewer__ strawberry ice creams than chocolate ice creams.

**Question 8: **

Compare the 2 sets of apples below:

Set __________ has __________.

- A, 8 more
- A, 10 fewer
- B, 8 more
- B, 8 fewer

**Answer:**

(3) B, 8 more

**Solution:**

Set A has 10 apples and Set B has 18 apples.

Let’s find out the difference in the number of apples in Set A and Set B.

\(18 - 10 = 8\)

Set B has 8 more.

**Question 9: **

Fill in the blank with the correct answer.

17 is greater than __________.

- 12
- 18
- 19
- 20

**Answer:**

(1) 12

**Solution: **

17 is smaller than 18, 19, 20.

**Question 10: **

Fourteen is smaller than __________.

- Thirteen
- Eleven
- Fifteen
- Twelve

**Answer:**

(3) Fifteen

**Solution: **

Fourteen is greater than thirteen, eleven and twelve.

**Question 11: **

Count and compare the sets below:

Set __________ has the greatest number of pens.

Set __________ has the smallest number of pens.

**Answer: **

Set __C__ has the greatest number of pens.

Set __B__ has the smallest number of pens.

**Solution: **

Set A has 14 pens, Set B has 6 pens and Set C has 20 pens.

**Question 12: **

Which crab is holding the greatest number?

**Answer:**

(1) 1

**Solution: **

Twenty is the largest number.

**Question 13: **

Which crab is holding the smallest number?

**Answer:**

(4) 13

**Solution: **

13 is the smallest number.

**Question 14: **

Arrange the numbers in order, starting with the greatest.

- 19, 18, 12, 15
- 19, 15, 18, 12
- 19, 18, 15, 12
- 12, 15, 18, 19

**Answer:**

(3) 19, 18, 15, 12

**Solution: **

We need to start from the greatest number. The greatest number is 19.

Therefore, Option 4 cannot be the answer.

Let’s arrange the numbers from the greatest to the smallest: 19, 18, 15, 12.

**Question 15: **

Arrange the numbers in order, starting with the smallest.

- 14, 17, 16, 20
- 16, 14, 20, 14
- 20, 17, 16, 14
- 14, 16, 17, 20

**Answer:**

(4) 14, 16, 17, 20

**Solution: **

We need to start from the smallest number. The smallest number is 14.

Therefore, Options 2 and 3 cannot be the answer.

Let’s arrange the numbers from the smallest to the greatest: 14, 16, 17, 20.

In this article, we have learnt: Numbers to 20

- Counting to 20
- Reading and writing numbers in numerals and words
- Comparing and ordering of numbers