Daily Practice · Higher

Daily Practice - Higher

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

12th August 1998

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

1
Speed and Density2 marks
A block has volume 25 cm^3 and density 4 g/cm^3. Work out its mass.
2
Vectors3 marks
a is the column vector (4, -5) and b is (-6, 3). Work out 4a - 5b as a column vector.
3
Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
Four classes in order have frequencies 5, 12, 11, 11. Write down the cumulative frequency at the end of the third class.
5
Bounds2 marks
A mass is 80 kg, correct to the nearest whole number. Write down the lower bound.

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