Creating and Manipulating Linear and Quadratic Expressions Stage 3 - Short Problems

This is part of our collection of Short Problems.

You may also be interested in our longer problems on Creating and Manipulating Linear and Quadratic Expressions - Stage 3.

Printable worksheets containing selections of these problems are available here:

 Stage 3 ★ Sheet 1 Solutions Stage 3 ★★ Sheet 1 Solutions

Inspector Remorse

KS 3 Short Challenge Level:

How long will it take Inspector Remorse to crack this crime spree?

Grow up Fast

KS 3 Short Challenge Level:

How old will Julie be when her age is equal to the sum of her daughters' ages?

Building Up

KS 3 Short Challenge Level:

Weekly Problem 16 - 2015
In the diagram, the number in each box is obtained by adding the two immediately below. What is the number in the top box?

No Matter

KS 3 Short Challenge Level:

Weekly Problem 2 - 2013
After performing some operations, what number is your answer always a multiple of?

8 in a Row

KS 3 Short Challenge Level:

The sum of five consecutive integers is equal to the sum of the next three consecutive integers. Can you find the largest of these eight integers?

Paul's Children

KS 3 Short Challenge Level:

Weekly Problem 29 - 2016
Paul is 32 years old. In ten years time, Paul's age will be the sum of the ages of his three sons. What do the ages of his sons add up to at present?

Forming Groups

KS 3 Short Challenge Level:

Weekly Problem 34 - 2006
Seventy pupils are divided into two groups. Can you work out the differnece between the number of boys in group 1 and the number of girls in group 2?

Beans Eating Beans

KS 3 Short Challenge Level:

Weekly Problem 13 - 2007
The Bean family are very particular about beans. At every meal all Beans eat some beans... At their last meal they ate 23 beans altogether. How many beans did Pa Bean eat?

Nine in a Line

KS 3 Short Challenge Level:

Weekly Problem 9 - 2008
The sum of 9 consecutive positive whole numbers is 2007. What is the largest of these numbers?

Cube Pile

KS 3 Short Challenge Level:

Weekly Problem 29 - 2017
Rick has five cubes. Each one is 2cm taller than the previous one. The largest cube is the same height as a tower built of the two smallest cubes. How high would a tower of all five cubes be?

Multiple Magic

KS 3 Short Challenge Level:

Weekly Problem 31 - 2009
Think of any whole number. Each time you perform a sequence of operations on it, what do you notice about the divisors of your answer?

Adding and Multiplying

KS 3 Short Challenge Level:

Amy misread a question and got an incorrect answer. What should the answer have be?

Square and Cube

KS 3 Short Challenge Level:

Weekly Problem 24 - 2014
The square of a positive number is twice as big as the cube of that number. What is the number?

Brothers and Sisters

KS 3 Short Challenge Level:

Can you work out how many brothers and sisters are in the family?

How Many Rectangles?

KS 3 Short Challenge Level:

Weekly Problem 37 - 2016
By drawing 5 horizontal and four vertical lines, one can form 12 rectangles. What is the greatest number of rectangles that can be formed by drawing 15 lines?

Cuboid Perimeters

KS 3 Short Challenge Level:

Can you find the volume of a cuboid, given its perimeters?

Square Total

KS 3 Short Challenge Level:

Weekly Problem 13 - 2017
What is the smallest number Anastasia could have thought of, if after performing some operations, the total is a square number?

Standing on the Table

KS 3 Short Challenge Level:

Weekly Problem 39 - 2017
Clement and Dmitri both measure how much taller they are standing on a table compared to the other standing on the floor. Can you work out how tall the table is?

Black and Gold Storeys

KS 3 Short Challenge Level:

25 of the storeys of a 50 storey building are painted gold, and the rest are painted black...