Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

20th September 2010

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
2
Congruent Triangles2 marks
Two triangles are known to be congruent because every side of one matches a side of the other. Which congruence condition is this?
3
Conditional Probability3 marks
20 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 44 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Bounds2 marks
A mass is 29.8 kg, correct to 1 decimal place. Write down the lower bound.

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