- Manipulating Surds (9)
- The Quadradic Formula (5)
- Solving Equations (14)
- Simultaneous Equations (7)
- Sequences (7)
- Rearranging Formulas (5)
- Proof (12)
- Powers and Roots (10)
- Multiplying Out Brackets (7)
- Iterative Methods (4)
- Inequalities (7)
- Functions (3)
- Formulas and Equations from Words (1)
- Factorising (7)
- Completing the Square (1)
- Algebraic Fractions (3)
- Algebra Basics (8)
- 3D Shapes – Surface Area (3)
- 3D Shapes – Volume (10)
- Area – Circles (3)
- Area – Triangles and Quadrilaterals (7)
- Bearings (2)
- Circle Geometry (2)
- Congruent Shapes (1)
- Geometry (2)
- Geometry Problems (4)
- Loci and Construction (4)
- More Enlargement and Projections (3)
- Parallel Lines (8)
- Polygons (4)
- Similar Shapes (9)
- The Four Transformations (13)
- Triangles and Quadrilaterals (4)
- Box Plots (7)
- Conditional Probability (1)
- Counting Outcomes (3)
- Cumulative Frequency (6)
- Grouped Frequency Tables (2)
- Histograms and Frequency Density (7)
- Interpreting Data (2)
- Other Graphs and Charts (3)
- Probability Basics (10)
- Probability Experiments (1)
- Sampling and Data Collection (6)
- Scatter Graphs (9)
- Sets and Venn Diagrams (4)
- Simple Charts and Graphs (1)
- The AND / OR Rules (1)
- Tree Diagrams (9)
Manipulating Surds
√5(√8+√18<) can be written in the form a√10 where a is an integer.
Find the value of a.
Video
3D Shapes – Surface Area
Shape S is one quarter of a solid sphere, centre O.
The volume of S is 576π cm3
Find the surface area of S.
Give your answer correct to 3 significant figures.
You must show your working.
Video
Box Plots
The table gives some information about the heights of 80 girls.
A) Draw a box plot to represent this information.
B) Work out an estimate for the number of these girls with a height between 133cm and 157cm.
Video
Upper and Lower Bounds
A train travelled along a track in 110 minutes, correct to the nearest 5 minutes.
Jake finds out that the track is 270 km long.
He assumes that the track has been measured correct to the nearest 10 km.
A) Could the average speed of the train have been greater than 160 km/h?
You must show how you get your answer.
Jake’s assumption was wrong.
The track was measured correct to the nearest 5 km.
B) Explain how this could affect your decision in part A.
Video
Direct Proportion
Here are the ingredients needed to make 10 pancakes.
Pancakes
Ingredients to make 10 pancakes
300 ml of milk
120 g of four
2 eggs
Matthew makes 30 pancakes.
A) Work out how much flour he uses.
Tara makes some pancakes.
She uses 750ml of milk.
B) Work out how many pancakes she makes
Video
Mid Point
The point A has coordinates (2, 3).
The point B has coordinates (6, 8).
M is the midpoint of the line AB.
Find the coordinates of M.
Video
3D Trigonometry
VABCD is a solid pyramid.
ABCD is a square of side 20 cm.
The angle between any sloping edge and the plane ABCD is 55o
Calculate the surface area of the pyramid.
Give your answer correct to 2 significant figures.
