Mr. Satan

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No it doesn’t, multiplication and division always take precedence over addition and subtraction. You’d need parentheses to clarify what is in the divisor since that can be ambiguous with line notation.

Times 5 and times 10 tables are really easy for me. So yeah, in my mind it’s an easier comuptation.

That being said having a result of a little over a 1000 gives me an estimate for the magnitude of a number – it’s around a thousand. It might be more or less but it’s not far from there.

72 * 10 + 70 * 3 + 2 * 3

That’s what I do in my head if I need an exact result. If I’m approximateing I’ll probably just do something like 70 * 15 which is much easier to compute (70 * 10 + 70 * 5 = 700 + 350 = 1050).