So we know that 3/4 is equivalent to 9/12, because 3Ã12=36 and 4Ã9=36. A simple way to look at how to check for equivalent fractions is to do what is called âcross-multiplyâ, which means multiple the numerator of one fraction by the denominator of the other fraction.nd yes grasshopper, 2/4 is an equivalent fraction for 4/8 too.As you already know, we are nuts about rules. So, letâs look at the Rule to check to see if two fractions are equivalent or equal. The rule for equivalent fractions can be a little tough to explain, but hang in there, we will clear things up in just a bit.
Common sizes used in the office and the home are A4 and A3 (A3 is the size of two A4 sheets). The density of paper ranges from 250 kg/m3 (16 lb/cu ft) for tissue paper to 1,500 kg/m3 (94 lb/cu ft) for some speciality paper. Printing paper is about 800 kg/m3 (50 lb/cu ft).
In the US today, standard paper is 8.5 inches wide and 11 inches long. In Europe today, standard is A4 paper, which is 297mm x 210mm, about 8-1/4 x 11-3/4.. If you're using an actual typewriter, you can type on every line on the paper. Standard typewriters are pitched at 6 lines per inch.