# Question Video: Counting in 2s, 5s, and 10s Mathematics • 1st Grade

A monster has five fingers on each of its four hands. How many fingers does the monster have altogether?

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### Video Transcript

A monster has five fingers on each of its four hands. How many fingers does the monster have altogether?

The word altogether in this question means in total. Now, one way we could count the total of the monster’s fingers is just one by one. One, two, three, four. This is taking quite a while, isn’t it? There’s got to be a quicker way to find the answer. Let’s look at the fact we’re given in the first sentence.

We’re told that a monster has five fingers on each of its four hands. We’ve already counted four of the fingers, can you see? And then we add this one here that looks a bit like a thumb; that makes five. And we can see that the monster has four hands altogether. One, two, three, four. And because each of the monster’s hands are the same, we know we can see five fingers plus another group of five fingers plus another group and one more. We can see four equal groups of five. So how could we find the total of four groups of five?

Well, we know how to skip count in fives, don’t we? It’s quite quick to do. Five, 10, 15, and so on. What if we counted in fives four times, one for each of the monster’s hands? Each time we make a jump of five, we’ll show it on a number line. Five, 10, 15, 20. Our monster has five fingers on each of its four hands. And we found the total number of fingers that the monster has altogether by skip counting in fives four times. Five, 10, 15, 20. The number of fingers that the monster has altogether is 20.