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# Form 2 mathematics lessons about reciprocals

In this courses, learners will learn and understand how to:

i) Find the reciprocals of numbers by division method.

ii) Find the reciprocals of numbers using reciprocal tables/mathematical table.

iii) Evaluate mathematical expressions using reciprocals.

Lessons (**10**) * SHARE*

- 1.
Finding reciprocals of numbers by division method

4m 55s - 2.
Finding reciprocals of numbers from mathematical tables

10m 9s - 3.
Computation using reciprocals

14m 5s - 4.
Find the reciprocal of each of the following decimal numbers using division:
(a) 2.5
(b) 4.2
(c) 9.4

4m 29s - 5.
Find the reciprocal of each of the following numbers using reciprocal tables:
(a) 56.2
(b) 4368
(c) 0.002978

3m 48s - 6.
Use reciprocal tables to work out each of the following:
(a) #1/0.0125+1/12.5 #
(b) #3/0.364#

3m 14s - 7.
Use reciprocal tables to work out each of the following.
(a) #17/0.051+3/0.0027#
(b) #4/0.375-5/37.5#

6m 14s - 8.
Use mathematical tables to work out each of the following:
(a) #1/sqrt0.2468#
(b) #1/(2.437)^2 #

5m 20s - 9.
Use mathematical tables to work out:
#3.045^2+1/sqrt49.24#

3m 28s - 10.
If #1/f = 1/u +1/v#, find f, given that u = 0.5 and v = 0.8

2m 24s

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