Bounds in calculations Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. No calculator. Show your working. steplyclass.com/foundations/bounds-in-calculations/quiz/

1. 1

   A rectangle is 8 cm by 5 cm, both to the nearest cm. Find the upper bound of its area.
   1. A) 46.75 cm²
   2. B) 40.5 cm²
   3. C) 467.5 cm²
   4. D) 4.675 cm²

2. 2

   A rectangle is 12 cm by 7 cm, both to the nearest cm. Find the lower bound of its perimeter.

   Answer: ____________________

3. 3

   X = 7 and y = 4, both to the nearest whole number. Find the upper bound of x + y

   Answer: ____________________

4. 4

   A runner runs 100 m to the nearest m in 12 s to the nearest s. Find the lower bound of the speed.

   Answer: ____________________

5. 5

   A car travels 150 km to the nearest km in 3 h to the nearest h. Find the lower bound of its speed.
   1. A) 4.27 km/h
   2. B) 42.7 km/h
   3. C) 427 km/h
   4. D) 59.8 km/h

6. 6

   A rectangle is 4.2 m by 2.5 m, both to 1 decimal place. Find the upper bound of its area.

   Answer: ____________________

7. 7

   X = 36 and y = 8, both to the nearest whole number. Find the upper bound of x ÷ y
   1. A) 0.487
   2. B) 48.7
   3. C) 4.29
   4. D) 4.87

8. 8

   A cyclist travels 60 km to the nearest 10 km in 2.5 h to the nearest 0.1 h. Find the lower bound of the speed.

   Answer: ____________________

9. 9

   X = 15.2 and y = 9.7, both to 1 decimal place. Find the upper bound of x − y
   1. A) −5.6
   2. B) 5.6
   3. C) 5.5
   4. D) 56

10. 10

    A swimmer swims 50 m to the nearest m in 32 s to the nearest s. Find the upper bound of the speed.

    Answer: ____________________