P1 Mathematics Challenging Problems
Contents
Unit 13 (17)
In a fish aquarium, there are 25 goldfish and 48 guppies.
How many goldfish must I buy so that there will be 24 more goldfish than guppies?
Unit 13 (19)
Dolly bakes 16 cakes,
Jasmine bakes 2 fewer cakes than Dolly.
Rosa bakes as many cakes as Dolly.
How many cakes does the 3 ladies bake altogether?
Revision 3 (28)
| Watermelon🍉 | Kiwi🥝 | Cherries🍒 | Mango🥭 |
|---|---|---|---|
| $7 | $10 | $8 | $6 |
When Tony wants to buy a watermelon and a bunch of cherries, he is short of $9.
Which fruit can he buy with his money?
Revision 2 (7)
John has 7 marbles.
Ben has 12 more marbles than John.
Alan has 3 fewer marbles than Ben.
How many fewer marbles than Alan does John have?
Revision 2 (9)
There are 40 fishballs on a plate.
32 of them are deep-fried and the rest are boiled.
Jack eats 4 deep-fried fishballs and 2 boiled fishballs.
How many boiled fishballs are there left?
Revision 3 (18)
In Block X, 56 out of 100 flats are not occupied.
In Block Y, 29 out of 77 flats are not occupied.
How many flats in the 2 blocks are occupied?
Unit 14 (20)
Study the number cards carefully.
Then write down 3 number sentences using ➕ or ➖ so that each number sentence has an answer of 54.
Revision 4 (8)
Mr Wee has $2.
He wants to exchange them for exactly 12 coins.
What are the coins that he can exchange with his $2?
Revision 4 (19)
Study the number pattern carefully.
What is the missing number?