Lesson Video: Counting Forward to 10 Mathematics • Kindergarten

In this video, we will learn how to count from 0 to 10 and find the missing numbers in a count sequence.


Video Transcript

Counting Forward to 10

In this video, we’re going to be learning how to count in ones from zero to 10. And we’re also going to use this skill to help us find missing numbers when we’re counting in a sequence. This cube represents the number zero. Can’t you see a cube? That’s because there isn’t one. Zero, of course, means nothing. Now, we have one cube. And if we make our line of cubes one more each time, we can count forwards in ones.

Let’s start with the two numbers we’ve said already. Zero, one, two, three, four, five, six, seven, eight, nine, 10. We’ve counted forwards in ones all the way from zero to 10. We used the cubes to help us here. We know we can count forwards to 10 without having a set of objects to count. This is a number track. It shows the numbers from zero to 10 in order. And it helps us remember where each number belongs. And because we know where each number belongs, we can use what we know to solve missing number problems. Which number is missing? We can see that it’s the number that comes after five. Zero, one, two, three, four, five — and what number comes next? — six. Let’s practice using our knowledge of the counting sequence from zero to 10 and finding out some missing numbers.

Elizabeth counts the steps as she climbs. Which number will she finish on? Which number has she missed out?

In the picture, we can see that Elizabeth is climbing a set of steps. And we’re told that she counts the steps as she climbs them. Perhaps this is the sort of thing you’ve done at home to see how many there are. The first part of this question asks us, which number will she finish on? In other words, which number will she say when she reaches the top step? Every step she takes, she says one more number. Let’s imagine that we’re climbing these steps. And we’ll count forwards one for each step that we stand on. One, two, three, four, five, six, seven, eight. There are eight steps. This means that the number that Elizabeth will finish counting on is the number eight.

In the picture underneath the second part of the question, we can see that Elizabeth has missed a number out as she climbs the steps. Here’s the missing number. What is it? We can use our knowledge of the counting sequence to count forwards and to work out what the missing number might be. One, two, three, four, five. We know the number after five is six. And then comes seven and eight. The missing number in the sequence is the number six. Our two answers are eight and six.

What number is missing? Four, what, six, seven. We’re given a picture that shows a sequence of numbers. We can see these numbers shown as digits, four, six, and then seven. And underneath, we can see the same sequence shown in blocks, four blocks, six blocks, and seven blocks. But our sequence isn’t all it seems. There’s a missing number. If we count through the sequence, we can see four, then a big gap where our missing number belongs, and then six and seven. And the question asks us, what number is missing? In other words, what comes after four in our sequence?

We’re given three possible answers to choose from. And we can see those over here. And if we look at these answers quickly, we can see which number is missing. But let’s work it out for ourselves. The only two numbers that are next door to each other that we know already are six and seven. And we know that if we count forwards in ones, we count from six to seven. Seven is the number that comes after six. And so, we know that our missing number must be the number that comes after four when we’re counting in ones. One, two, three, four. What comes next? Five, our missing number must be the number five.

But if we look at our three possible answers, we can see that each one of them shows the digit five. How can we decide which one is correct? Well, we need to count the blocks underneath. We need to show five blocks to match our digit five. Let’s count each group of blocks. In the first group, we have one, two blocks. This doesn’t show the number five at all. Let’s try our second possible answer. In this one, we have one, two, three, only four blocks. Again, this is too small.

It looks like our last answer must be the correct one. Let’s just count to make sure that there are five blocks. One, two, three, four, five blocks. Now, we think we’ve found our missing number. Let’s see whether our sequence makes sense. Four, five, six, seven. We’ve counted forwards in ones and we’ve found that our missing number was the number five. The correct answer is the one that shows the digit five and also five blocks underneath.

Complete the following pattern: what, what, what, three, four, five, six, seven, eight, nine, 10.

When we listened to that pattern, it sounded a little bit like we were counting to 10. But there were a few whats at the start, weren’t there? Some missing numbers. Let’s read our pattern again. What, what, what, three, four, five, six, seven, eight, nine, 10. Well, we’ve definitely heard the last part of our pattern before. These are definitely the numbers that we say when we’re counting forwards in ones. So our missing numbers must be the start of this pattern. What can we use to help us count forwards to 10?

We could use a number track like this one. It shows all the numbers in order from zero all the way up to 10. Now, where’s our number pattern on this number track? Well, here is the number three. And after it comes the number four and so on. So we can use the number track to work out our missing numbers. If we’re counting forwards in ones, the number that we say before we say three is the number two. Two, three, four, five, and so on. And the number that we say before we say two is, of course, the number one. One, two, three, four, and so on. This means that our first missing member must be zero.

Let’s check whether our completed pattern makes sense. And as we say each number, we’ll move a counter along our number track. Zero, one, two, three. Our first three digits fit perfectly with our pattern. Let’s finish it off, four, five, six, seven, eight, nine, and 10. We’ve used our knowledge of counting forwards to 10 to help us to complete the pattern. Our three missing numbers, in order, are zero, one, and two.

So what have we learned in this video? Well, firstly, we’ve learned how to count in ones all the way from zero to 10. We’ve also learned that each number has a position where it belongs. And we’ve used things like number tracks to help us to learn these positions. Finally, we’ve used what we know about counting forwards to 10 to help find missing numbers.

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