IGCSE /Grade 8
Maths MCQ Based On Adding and subtracting rational numbers
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IGCSE Grade 8 Maths Adding and subtracting rational numbers
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Fraction form
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Lcm =[-64+9]/8=-55/8
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Lcm=[78-20]/65=58/65
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add
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Taking Lcm =12/6=2
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Subtract by making the denominator same.
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Add by making the denominator same.
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Eg X-X=0
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Lcm =[84+30]/35=114/35
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make denominators same
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