Mathematics for IGCSE & O level - Estimation (Section 3 - No. 40) | ExamPlay

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Mathematics for IGCSE & O level - Estimation (Section 3 - No. 40)

What is 126 rounded to 1 s.f.?

100

120

130

200

Wyjaśnienie

Because the second significant digit is 2, therefore it's 100.

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