Expressing missing numbers algebraically

Maths

Calculation problems

How could we express the perimeter of the rectangle below?

How could we express the perimeter of the square below?

What would be the next term in this sequence?                                                                                                  4.5,      4.75,      5,       5.25,      5.5,      5.75

What is the term to term rule in this sequence?                                                                                       9.2,      9.15,       9.1,       9.05

What would be the previous term in this sequence?   -3,    -1,    1,    3,    5

Look at the following sequence, which term below can not be part of that sequence?       56,  61,  66,  71,  76

Starter Quiz