Review Calculator Exercises - Sharp EL-531LH Mastering Instructions

Review calculator exercises

1. Perform the following calculations
(i) (5 + 4) × 3
(ii) 12.5 – 8 ÷ 0.5
×
3 6 8 –
-------------------- -
(iii)
4
12.8
----------------------- -
(iv)
16.5 3.8 –
×
7 0.41 + 17
------------------------------- -
(v)
( ) 2 ×
4 + 7
2.4
------ -
(vi)
3
-- -
4
2
5 ⁄
(vii) 145.6 17.2 –
2
5 ⁄
(viii) 345.6 17.2 –
×
3 27
-------------------- -
(ix) 25 +
1.02 30
( )
(x) 4.1333 3.000 –
2
( ) (
100 90 – 50 60
--------------------------- - ------------------------ -
(xi) +
90
2. The following data is on growth (in $m) in an economy over a 8 year period:
2.5 6.2 -2.1
Calculate (i) Σx (ii) Σx
2
0.1366 0.2000
±
------------------ - ------------------ -
2.015 +
6
2 2
) ( )
– 20 30 –
------------------------ -
+
60 30
0.04 8.2 7.4
2 2
(iii) (Σx)
Mastering the Calculator using the Sharp EL-531LH
2
6
2.1 -1.7
Explain in words what each of these mean.
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