Year 2 Lesson 11 In-class Exercise

Name ________________________

1). Find the prime factors of:
a). 21.







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b). 40.







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c). 60.







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d). 720.







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2). Find the Greatest Common Factors (GCF) of:
a). 18 and 27



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b). 24 and 42



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c). 44 and 66



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d). 36 and 81



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e). 42 and 48



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