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Question

Write the proper numbers in the boxes.

(1) 310÷36=3 -
(2) 719÷74=7
(3) 1220÷1212=12
(4) 2.115÷2.113=2.1
(5) x14÷x10=x
(6) x6÷x4=x

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Solution

(1) 310÷36=3 -
Consider 310 ÷ 36
=310-6 am÷an=am-n when m > n

(2) 719÷74=7
Consider 719 ÷ 74 (am ÷ an = am–n when m > n)
=715

(3) 1220÷1212=12
Consider 1220÷1212
=1220-12 am÷an=am-n when m>n=128

(4) 2.115÷2.113=2.1
Consider (2.1)15 ÷ (2.1)13
= (2.1)15–13 (am ÷ an = am–n when m > n)
=2.12

(5) x14÷x10=x
Consider x14 ÷ x10
= x14–10 (am ÷ an = am–n when m > n)
=x4

(6) x6÷x4=x
Consider x6 ÷ x4
= x6–4 (am ÷ an = am–n when m > n)
=x2

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