Questions tagged [multiplication]
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3 questions
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Where to position the carried integers in long multiplication workings?
When I was taught long multiplication many moons ago it would be to place the larger number on the top row and the smaller number on the bottom. Consider 25 x 531:
$$
\;\;5 \; 3 \; 1 \\
\times \; \; 2 ...
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Is it meaningful to add a number to itself a fractional number of times?
(Migrated from the math stack exchange, where I received an apt-seeming suggestion to pose the question here, at the math-educators stack exchange)
I introduce my young kids to basic math concepts in ...
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How to explain to a ~$12-16$ year-old student who is weak at maths, that $\ 38 \times 27 \times 14 = 27 \times 14 \times 38$?
How to explain to a ~$12-16$ year-old student who is weak at maths, that $\ 38 \times 27 \times 14 = 27 \times 14 \times 38,\ $ and that $\ 3.4 \times 10^{-6} \times 2.1 \times 10^{-5} = 3.4\times 2.1 ...
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