Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
20th January 2020
- 1Circle Theorems2 marks
A, B and C are points on a circle with centre O. Angle AOC is 80°. Work out angle ABC, where B is on the major arc.
- 2Venn Diagrams3 marks
In a Venn diagram, 8 are in A only, 18 in B only, 2 in both and 2 in neither. Work out the probability a random one is in both.
- 3Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 144 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 4Surds2 marks
Write sqrt(98) in the form a sqrt(b), where b is as small as possible.
- 5Expanding and Factorising Quadratics2 marks
Factorise x^2 - 144.
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