Original Material © Cambridge University Press 2010 Decide if these statements are true or false. Give some examples if you can.  The last digit of a number formed by squaring a whole number can never be zero.  The last digit of a number formed by squaring a whole number can sometimes be 3.  The last digit of a number formed by cubing a whole number can be any number from 0 to 9. Squaring and cubing recap

Original Material © Cambridge University Press 2010 Use algebra to write expressions for the lengths marked A, B, C, D and E. Make up some similar puzzles whose answers are: 2a + 4b a + b + c  2a Make them as interesting as you can! 10 + a – b Simplifying expressions

Original Material © Cambridge University Press 2010 What operation or operations are inside each of these function machines? x2x + 1 A B C D Function machine re-cap

Original Material © Cambridge University Press 2010 Using just 2, 3 and 4 and any maths symbols you know, make as many numbers as you can in 5 minutes. For example: Order of operations re-cap

Original Material © Cambridge University Press 2010 These three shapes are all made from rectangles. Write an expression for the perimeter of each shape. Look at the expressions for the perimeters. What do you notice? (1) (2) (3) Forming and solving equations

Original Material © Cambridge University Press 2010 In five minutes make up any many equations as you can with solutions 1, 2, 3 … etc. Try to make them interesting – but be sure you can solve them! Equations and formulae

Original Material © Cambridge University Press 2010 Two friends, Jade and Paul are arguing … Who is right? Investigate using the equation 2x – 8 + 2x = 12. Start by testing Jade’s comment, then test Paul’s. Test it on some other equations. Each time changing what you do to each side. Solving equations (2)

Original Material © Cambridge University Press 2010 Jot down all you can about this sequence of squares. and so on. a) How can you tell that there cannot be a pattern consisting of 1000 squares? b) How many squares are there in the next shape after the one with 1003 squares in it? c) How many squares are there in the 1000 th shape? Sequences

Original Material © Cambridge University Press 2010 The red, blue and green spots continue in the same way. a) Describe the rule for for placing blue spots. b) Can there be a point that has two different coloured spots on it? How did you decide? c) Decide which colour spots, if any, are on these points: (100, 101), (101, 100) (101, 103), (100, 100) (101, 101), (103, 102). Mappings and straight-line graphs

Original Material © Cambridge University Press 2010 a)The equation of the red line is y = 2x + 2. b)The equation of the green line is y = 2x. c)The blue line is parallel to a line with equation y = 2x. d)The green line will pass through the point (5, 10). e)The green line only crosses the other three lines at the points (-2, -4) and (2, 4) and nowhere else. Straight-line graph re-cap Are the statements true or false? Explain your answers.