Multiplying decimals and/or fractions, including negative ones - 7th grade math

Examples of how to multiply decimals and/or fractions (RATIONAL NUMBERS), including negative decimals and fractions - a lesson for 7th grade math.

We also look at a multiplication 0.15 x (-2/5) which includes both a decimal and a fraction. I solve it in two different ways: using fraction multiplication, and then using decimal multiplication. The answers look different, but are equal.

Lastly, I invite the viewers to come up with situations where particular MULTIPLICATIONS would be done in real life. :)

See also

Dividing fractions & decimals, including negative ones — video lesson

Math Mammoth Rational Numbers — a short workbook where you can find worksheets to match this lesson.

Math Mammoth Grade 7 curriculum (pre-algebra)

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