You multiplicative numerals mention the number of times a given quantity was multiplied, indicating a proportional increase of the same quantity.
If you've heard about double, triple, quadruple and quintuple and you don't know what these words mean, how and when they should be used, this article is for you. Check out!
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O twice a number indicates that a certain amount has been multiplied by 2, that is, imagine that Peter has a box with five marbles and Jane has twice as many. How many marbles does Maria have?
To find out the answer is simple, just multiply the amount in Peter's box by two. This means that Joan's number of marbles is equal to 5×2=10. Ten being twice five.
To find the triple, just multiply by 3. that is, the triple of a number indicates that a certain quantity has been multiplied by 3. Imagine that there are more people in Pedro and Joana's class, and that Pedro has a box with 3 colored pencils, Joana has twice as many and Julia has triples.
The calculation to find out how many colored pencils Joana and Julia have is as follows: Pedro has three colored pencils, Joana 3×2=6, and Julia 3×3=9. This means that nine is three times 3.
O quadruple a number indicates that a certain amount has been multiplied by 4. Now imagine that Pedro has two balls, Joana has twice as many balls as Pedro, Julia has three times as many balls as Pedro, and Gabriel has four times as many balls as Pedro.
To find out how many balls Gabriel has, just multiply the number of balls Pedro has by 4, as follows: 2×4=8, so the quadruple of two is eight, and Gabriel has eight balls.
O quintuple of a number indicates that a certain amount has been multiplied by 5. So imagine that Joana has 3 chocolates, Julia has twice as many, Pedro triple the chocolates that Joana has, Gabriel has four times as many chocolates and Felipe has five times as many chocolates as Joana.
How many chocolates does Felipe have? To find out it's easy, check out:
Joana = 3 chocolates
Julia = 3×2=6 (Joana's double)
Peter = 3×3=9 (triple of Joan)
Gabriel = 3×4=12 (Quadruple of Joan)
Philip = 3×5=15 (Joana's quintuple)
Therefore, five times three equals five.
Read too: Even and odd numbers – What are they?