Mixed Topic Worksheet Grades 4/5: Day 089
- 1
Question 1. Ali invests some money in an account that pays 5% simple interest per year.
After 2 years the interest is £84.
Work out how much money Ali invested.Simple Interest▶ Show worked answerHide worked answer
- M1: 84 ÷ 2 = 42
- M1: 42 ÷ 5 × 100
- A1: 840
Answer: £840[3 marks] - 2
Question 2. Work out 200% of £35.
Percentages Greater than 100▶ Show worked answerHide worked answer
- M1: 200% = 2 × 35
- A1: £70
Answer: £70[2 marks] - 3
Question 3. A scatter graph shows height against age for children aged 5 to 12.
Ali uses the line of best fit to predict the height of a 40 year old.
True or False: his prediction is reliable? Give a reason.Danger of Extrapolation▶ Show worked answerHide worked answer
- B1: False
- B1: age 40 is far outside the data range 5 to 12
Answer: False; it is extrapolation far outside the range of the data[2 marks] - 4
Question 4. A straight line passes through (a, 11) and (3, 5).
The gradient of the line is 2.
Work out the value of a.Equations of a Straight Line Using Two Points▶ Show worked answerHide worked answer
- M1: dfrac11 - 5a - 3 = 2
- M1: a - 3 = 3
- A1: a = 6
Answer: 6[3 marks] - 5
Question 5. The diagram shows a shape made from a rectangle and a triangle.
The area of the shape is 144 cm².
Work out the value of x.Area of Compound Shapes▶ Show worked answerHide worked answer
- M1: triangle area = 144 - 12 × 9 = 36
- M1: tfrac12 × 12 × x = 36
- A1: 6
Answer: 6 cm[3 marks]
Mixed Topic Worksheet Grades 4/5: Day 089
- 1
Question 1. Ali invests some money in an account that pays 5% simple interest per year.
[3 marks]
After 2 years the interest is £84.
Work out how much money Ali invested.Simple Interest▶ Show worked answerHide worked answer
- M1: 84 ÷ 2 = 42
- M1: 42 ÷ 5 × 100
- A1: 840
Answer: £840 - 2
Question 2. Work out 200% of £35.
[2 marks]Percentages Greater than 100▶ Show worked answerHide worked answer
- M1: 200% = 2 × 35
- A1: £70
Answer: £70 - 3
Question 3. A scatter graph shows height against age for children aged 5 to 12.
[2 marks]
Ali uses the line of best fit to predict the height of a 40 year old.
True or False: his prediction is reliable? Give a reason.Danger of Extrapolation▶ Show worked answerHide worked answer
- B1: False
- B1: age 40 is far outside the data range 5 to 12
Answer: False; it is extrapolation far outside the range of the data - 4
Question 4. A straight line passes through (a, 11) and (3, 5).
[3 marks]
The gradient of the line is 2.
Work out the value of a.Equations of a Straight Line Using Two Points▶ Show worked answerHide worked answer
- M1: dfrac11 - 5a - 3 = 2
- M1: a - 3 = 3
- A1: a = 6
Answer: 6 - 5
Question 5. The diagram shows a shape made from a rectangle and a triangle.
[3 marks]
The area of the shape is 144 cm².
Work out the value of x.Area of Compound Shapes▶ Show worked answerHide worked answer
- M1: triangle area = 144 - 12 × 9 = 36
- M1: tfrac12 × 12 × x = 36
- A1: 6
Answer: 6 cm
Mixed Topic Worksheet Grades 4/5: Day 089
- 1
Question 1. Ali invests some money in an account that pays 5% simple interest per year.
After 2 years the interest is £84.
Work out how much money Ali invested.Simple Interest▶ Show worked answerHide worked answer
- M1: 84 ÷ 2 = 42
- M1: 42 ÷ 5 × 100
- A1: 840
Answer: £840[3 marks] - 2
Question 2. Work out 200% of £35.
Percentages Greater than 100▶ Show worked answerHide worked answer
- M1: 200% = 2 × 35
- A1: £70
Answer: £70[2 marks] - 3
Question 3. A scatter graph shows height against age for children aged 5 to 12.
Ali uses the line of best fit to predict the height of a 40 year old.
True or False: his prediction is reliable? Give a reason.Danger of Extrapolation▶ Show worked answerHide worked answer
- B1: False
- B1: age 40 is far outside the data range 5 to 12
Answer: False; it is extrapolation far outside the range of the data[2 marks] - 4
Question 4. A straight line passes through (a, 11) and (3, 5).
The gradient of the line is 2.
Work out the value of a.Equations of a Straight Line Using Two Points▶ Show worked answerHide worked answer
- M1: dfrac11 - 5a - 3 = 2
- M1: a - 3 = 3
- A1: a = 6
Answer: 6[3 marks] - 5
Question 5. The diagram shows a shape made from a rectangle and a triangle.
The area of the shape is 144 cm².
Work out the value of x.Area of Compound Shapes▶ Show worked answerHide worked answer
- M1: triangle area = 144 - 12 × 9 = 36
- M1: tfrac12 × 12 × x = 36
- A1: 6
Answer: 6 cm[3 marks]