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Problem solving beyond classroom Primary 1

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Numbers from 1-100
1. Write 909 in words.
2. In 285, which digit is in the tens place?
3. In 704, in which place is the digit 4?
4. 530 is __than 503.
5. 50 less than 955 is _____.
6. Fill in the missing numbers in the number pattern.
410, 430, _____, _____, 490, 510
Who am I?
1.I am a two digit number.
I am even but greater than 25 and less than 40 .
I am divisible by 8.
2. All my four digits are consecutive.
If you add my digits the sum is 18.
3. I am a 3 digit number.
All my digits are same
If you add all my digits you get 24.
4. I am a two digit number.
Both my digits are even
If you add 2 to my tens digit you will get my ones digit
If you add my digits together the sum is 10
5. I am two digit number
Both my digits are odd
Both my digits are less than 4
My digits are not same
I am greater than 15
6. I am a two digit number
My ones digit is half my tens digit
I am divisible by 9
7. I am a two digit number
The sum of my digits is 6 and my product is 8
I am greater than 25.
8. I am a three digit number
The sum of my digits is 4
My hundreds digit and my ones digit are the same number
I am greater than 200.
9. I am a two digit number and divisible by 2,3,4,6,8 and 12.
I am less than 30
10. I am two digit number .
My both the numbers are same
I am less than 89 and more than 79.
11. There are 9 penguins at a zoo.
3 of them are baby penguins. 2 of the adult penguins are male.
a. How many adult penguins are at the zoo?
b. How many female adult penguins are there??
12. David buys 8 balloons from the school bookshop. Santa buys 5 ballons. How many
more balloons does David have than Santa?
13. Grace Makes 7 Friendship braelets. She makes 2 friendship braelets more than Nelly.
How many friendship bracelets does Nelly make?
14. Janet bakes 10 Muffins.
She bakes 2 chocolate muffins more than raisin muffins.
a) How many raisin muffins does Janet bake?
b) How many chocolate muffins does Janet bake?
15. Sum of two numbers is 8. Difference of two numbers is 4. what are those numbers.
16. Sum of two numbers is 80. Difference of two numbers is 40. What are those numbers.
17. Sum of two numbers is 9. Difference of two numbers is 3. What are those numbers.
18. In a badminton competition , 4 players are left.
In order to find a winner, each player will have to play once with all the other players.
How many games will this take?
19. Seth has 3 erasers more than Yan Ling.
Eah child has more than 4 erasers but less than 10 erasers. How many erasers can Seth
have?
20. Robin and Akhil won same game cards.
Eah child won less than 10 ards.
Akhil won 5 game cards less than Robin.
What was the minimum numbers of game cards that robin won?
21.Three class mates , Anne, Beatrice and Carelene are taking photos of themselves
standing in a row. In how many ways can they stand?
First Position Second position Third Position
22. Qing Qing has 3 T-shirts and 3 Skirts, each with a different design and number or letter.
Each t-shirt can be woTn with any of the skirts
How many different outfits can Qing Qing have?
No table of contents entries found.
T-shirt
Skirt
23. Complete the following pattern
24. Find the number of squares
25. Understand the pattern
Fig.1
Fig.2
a. How many heart shapes are in fig.1 and fig.2
b. How many heart shapes will be there in figure 3
c. How many heart shapes will be there in figure 5
26. How many squares are needed to build figure 5
Fig.1
Fig .2
Fig .3
Fig .4
fig.5
27.
28.
Fig.1
Fig.2
Fig.3
Fig.4
Fig.5
29. Terry has 3 stickers of different shapes. He has to keep them all on one line. In how
many ways can he stick them in his album?
1st shape
2nd shape
3rd shape
30. There are 20 people in a playground.
6 of them are boys and 8 of them are girls. The rest are adults.
a. How children are there?
b. How many adults are there ?
31. Karry sets up a game stall . He wants to arrange 21 boxes in a triangular arrangement.
How many boxes will Karri use to make the bottom row of the arrangement?
32. Alieen is queuing at an icecream stall. She is behind 5 children.
There are 4 oys and 3 girls behind her.
How many children are there in the queue?
33. Clinton is taller than Anwar but shorter than Bin Wan.
Devi is shorter than Bin Wan but taller than Clinton
Who is the tallest and who is the shortest ?
34. Mrs. Gopal is having a birthday party for Matthew.
Mrs.Gopal has 9 people on he rinvitation list.
Matthew has 8 people on his invitation list
Mrs.Gopal has noticed that 5 people from her list are on Matthew’s list. How many
invitation ards do they need to send out altogether
35. Four chidren have decided to play a card game at a circular table.
Where does each child sit?
Use the below clues to help you find the children’s names on the empty chairs around the
table
a. Jeremy, Samy, Vivien and Junaida are playing a card game.
b. Junaida is the delaer and deals the first card to her left.
c. Samy gets the first card.
d. Jermey, who is sitting across from Samy, wins the game.
40. Use numbers 1 to 7 and place one number in each square. Move the number around
until the sum of each of 3 squares joined by a straight line is exactly the same.
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