Year 7 Working systematically

What can you discover about adding and subtracting sets of consecutive numbers?

Can you select the missing digit(s) to find the largest multiple?

By choosing to add numbers from 1-4, can you hit the target number in this game?

Given the products of adjacent cells, can you complete this Sudoku?

What is the smallest number of answers you need to reveal in order to work out the missing headers?

The Number Jumbler can always work out your chosen symbol. Can you work out how?

The sum of the numbers inside an envelope is written on the outside. What could the numbers be?

Can you make doughnuts by matching these fractions, decimals and percentages?

Can you use the clues to complete these 5 by 5 Mathematical Sudokus?

How many solutions can you find to this sum? Each of the different letters stands for a different number.

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

Can you find six numbers to go in the daisy from which you can make all the numbers from 1 to a number bigger than 25?

How many different symmetrical shapes can you make by shading triangles or squares?

Try entering different sets of numbers in the number pyramids. How does the total at the top change?

Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?

Find the frequency distribution for ordinary English, and use it to help you crack the code.

If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?

Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?

Mathematicians are always looking for efficient methods for solving problems. How efficient can you be?

Can you find a way to identify times tables after they have been shifted up or down?

How can you change the area of a shape but keep its perimeter the same? How can you change the perimeter but keep the area the same?

Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?

Can you find the squares hidden on these coordinate grids?

I'm thinking of a rectangle with an area of 24. What could its perimeter be?

Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?

Anna, Ben and Charlie have been estimating 30 seconds. Who is the best?

Can you crack these cryptarithms?

Can you deduce the perimeters of the shapes from the information given?

How many questions do you need to identify my quadrilateral?