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