It is far quicker to just remember that 0.25≡1/4
The ≡ means equivalent to
Explanation:
Multiply by 1 and you do not change the value. However, 1 comes in many forms.
0.25×1 → 0.25×100/100
25/100→
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We know that 25 will divide exactly into 100 so we can and may do this:
(25÷25)/(100÷25)=1/4
