PS RU P1L10 Numbers to 20 WS

PRIMARY 1

Rev Up! Math

Name

Tutor

Topic Numbers to 20 (Lesson 10)

Numbers to 20 (Lesson 10)

Primary 1: Rev Up! Math
Exercise 1: Write 11 to 20 in words.

10 + 1 = 11

10 + 2 = 12 t

10 + 3 = 13 tn

10 + 4 = 14 f

10 + 5 = 15 f

16 – sixteen 17 - seventeen 18 - eighteen 19 - nineteen
20 -

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Primary 1: Rev Up! Math

Exercise 2: Help the two little ants
cross the pond to reach
the other side of the
pond. Colour their path in
order from 11 to 20.

11 12 11
11 14 13 14
13 14 16 15
15 16 17 17
16 17 18 19

20

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Primary 1: Rev Up! Math
Exercise 3: Count and write the numbers in numerals and in words.
1)

2)

3)

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Primary 1: Rev Up! Math

Exercise 4: Fill in the blanks.

Set A Which set has
more bananas?
Yummy!

Set B

1. How many bananas are there in Set A?

2. How many bananas are there in Set B?

3. Which set has more bananas? Set

4. How many more? more bananas

*5. Set has fewer bananas than Set .

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Primary 1: Rev Up! Math

6. Look at the numbers below carefully.

12 20 18 16

a) Circle the leaf that is 2 less than 18.

b) 1 more than 17 is .

c) 6 less than 18 is .

*d) 6 more than 6 is .

7. Complete the number patterns.

a) 10 12

b) 20 19 17

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Primary 1: Rev Up! Math

*8. Danny wants to collect 16 stamps.
He has already collected some stamps.
Draw the number of stamps he still needs to collect.

9. Arrange the numbers from the greatest to the smallest.

19 11 15 20

, , ,

greatest

10. Tick the set that has fewer items.

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Extension Primary 1: Rev Up! Math

Exercise 5: Fill in the blanks. 14 13
19
1. Fill in the missing number in each set.
6
15 18 12 11 17
12 20 8
11 14
16 19

Set A Set B Set C Set D

2. The following soccer jerseys belong to Viva’s soccer team.

Dan Ali Ben Jim Rob Ned
19 12
10 1 20 15

Oli Sam Kit Uma Raj Mike
4 7 17 5 13 3

Write the names of the players in the correct groups.

Names of Names of Names of Names of
players with players with players with players with
numbers less numbers from numbers from numbers
than 5 5 to 10 11 to 16 greater than 16

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