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Without using logarithm tables, evaluate 0.015+0.45÷1.54.9×0.2+0.07 giving the answer in decimal form.

Class: Form 1

Subject: Mathematics

Topic: Evaluation of Numerical Expressions

Lesson Summary

Without using logarithm tables, evaluate 0.015+0.45÷1.54.9×0.2+0.07 giving the answer in decimal form.



Text Answer


By bodmas

Work out division 0.45÷1.5=0.3

=0.015+0.34.9×0.2+0.07

Work out multiplication 4.9×0.2=0.98

=0.015+0.30.98+0.07

Work out numerator 0.015 +0.3 = 0.315

Work out denominator 0.98 + 0.07 = 1.05

=0.3151.05

To remove the decimal places multiply by 1000
=0.315×10001.05×1000

=315105×10

=310

=0.3

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