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38
Mastering the Calculator using the Sharp EL-531LH
Calculator solutions
1.
(i) (5 + 4) × 3
Make sure your calculation is in comp mode.
(ii) 12.5 – 8 ÷ 0.5
×
3 6 8
–
-------------------- -
(iii)
4
Either (3 × 6 – 8) ÷ 4, or 3 × 6 – 8 = ÷ 4 =
12.8
----------------------- -
(iv)
16.5 3.8
–
Either 12.8 ÷ (16.5 – 3.8) =, or 16.5 – 3.8 =
×
7 0.4
+
17
---------------------------- -
(v)
(
)
×
4
+
7
2
Either ... ÷ ((4 + 7) × 2) or ... ÷ (4 + 7) ÷ 2
2.4
------ -
(vi)
3
-- -
4
Either 2.4 ÷ (3 ÷ 4), or 2.4 ÷ 3 a
2
5 ⁄
(vii)
145.6 17.2
–
√
2
(145.6 – 17.2x
2
5 ⁄
(viii)
345.6 17.2
–
√
2
(345.6 – 17.2x
) =
×
3 27
-------------------- -
(ix)
25
+
1.02 30
25 + 3 × 27 ÷ 1.02 ÷
4 =
b/c
=
÷ 5)
√
÷ 5 =
√
30 =
= 27
= -3.5
= 2.5
= 1.007874
× 12.8 =
= 0.9
= 3.2
= 9.296..
= 1.41..
= 39.4985
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