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Rounding: decimal places – answers

June 5, 2017

Workout

Question 1:

(a)  3.5     (b)  0.1     (c)  9.8     (d)  12.8

Question 2:

(a)  4.8     (b)  6.2     (c)  9.8     (d)  10.6     (e)  21.4     (f)  3.1     (g)  48.2

(h)  29.3   (i)  80.9    (j)  0.4     (k)  248.4    (l)  637.5   (k)  62.9   (l)  10 (10.0)

Question 3:

(a)  4.3      (b)  7.7     (c)  2.5     (d)  1.7

Question 4:

(a)  5.2     (b)  8.2     (c)  10.1     (d)  39.6     (e)  0.8

(f)  93.3    (g)  38.3   (h)  7.3      (i)  0.5

Question 5:

(a)  5.12     (b)  7.87       (c)  0.44     (d)  16.01

Question 6:

(a)  3.49     (b)  2.61     (c)  1.98     (d)  10.05     (e)  8.16

(f)  19.37    (g)  3.14     (h)  6.07     (i)  4.26       (j)  93.46

Apply

Question 1:  51.3%

Question 2:  (a)  5.4     (b)  5.43

Question 3:   Daniel has moved the decimal place instead of rounding.

Question 4:  Any 10 values from 9.15 ≤ x < 9.25 such as 9.18 or 9.218 etc

Question 5:  0.47g

Question 6:  Here is a possible solution –

A = 8.33 and B = 5.13  – the difference is 3.2

C = 8.3 and B = 5.1 – the difference is 3.2

 

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