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M’s Reviews > Maths on the Back of an Envelope: Clever ways to (roughly) calculate anything. An entertaining introduction to mental maths and problem solving > Status Update

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M is on page 128 of 208
— Sep 09, 2026 01:31PM
Maths on the Back of an Envelope: Clever ways to (roughly) calculate anything. An entertaining introduction to mental maths and problem solving

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M
M is on page 57 of 208
— Aug 17, 2026 02:38PM
Maths on the Back of an Envelope: Clever ways to (roughly) calculate anything. An entertaining introduction to mental maths and problem solving


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M is on page 50 of 208
— Aug 17, 2026 09:06AM
Maths on the Back of an Envelope: Clever ways to (roughly) calculate anything. An entertaining introduction to mental maths and problem solving


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