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PART - 2 CH : 4 Another Peek Beyond the Point — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSPART - 2 CH : 4 Another Peek Beyond the Point5 Marks
Question
Write the decimal number at the arrow mark:
Image
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Answer

(i) Here number line is divided into 10 equal parts.
Difference between 3.2 and 3.1 = 3.2 – 3.1 = 0.1
Value of each mark $=\frac{0.1}{10}=0.01$
Now the arrow is on the sixth mark after 3.1
∴ Decimal number at the arrow mark = 3.1 + 6 × 0.01
= 3.1 + 0.06
= 3.16
(ii) Here number line is divided into 10 equal parts between 2.15 and 2.17.
∴ Difference between 2.17 and 2.15 = 2.17 – 2.15 = 0.02
Value of each mark $=\frac{0.02}{10}=0.002$
Arrow is on the sixth mark after 2.15
∴ Decimal number at the arrow mark = 2.15 + 6 × 0.002
= 2.150 + 0.012
= 2.162

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