Free interactive math game: Count Multiples — Multiples of 3 ≤ 20?. Part of the Divisibility & Numbers category on MathKite.
Taken from the generator that powers this exercise. A fresh set appears every time the page is opened, and the printable worksheet holds ten of them.
Counting how many multiples of a number fall inside a range.
Divide the upper limit by the number and take the whole part. That counts every multiple from the first one upwards.
Multiples of 5 up to 25 number 25 : 5 = 5, namely 5, 10, 15, 20 and 25.
Reading less than as less than or equal to. Whether the boundary itself counts changes the answer by one.