Lesson Video: Multiplying by 5 | Nagwa Lesson Video: Multiplying by 5 | Nagwa

Lesson Video: Multiplying by 5 Mathematics • 3rd Grade

In this video, we will learn how to model multiplication by 5 and recite the 5 times table up to 50.

07:49

Video Transcript

Multiplying by Five

In this video, we will learn how to model multiplication by five and recite the five times table.

Here’s a flower with five petals. If we have one flower, we have one group of five petals. And we would write this as one multiplied by five. One times five is five. Two times five is 10. Three times five is 15. And four times five is 20. And five times five equals 25. Five, 10, 15, 20, 25, we call these numbers multiples of five. What do you notice about these numbers? Multiples of five end in a five or zero: five, 10, 15, 20, 25. A multiple of five is the product when we multiply a number by five. The numbers five, 10, 15, 20, and 25 are all multiples of five.

When we’re skip counting by five, the numbers we say are all multiples of five: five, 10, 15, 20, 25, 30, 35, 40, 45, 50.

Now that we’ve learned what a multiple of five is, let’s practice reciting the five times table. One times five is five. Two times five is 10. Three times five is 15. Four times five is 20. Five times five is 25. Six times five is 30. Seven times five is 35. Eight times five is 40. Nine times five is 45. And 10 times five is 50. Let’s practice what we’ve learned about multiplying by five with some questions.

The sequence chart will help you to multiply by five using the method of skip counting by five up to 10 times. Use skip counting to find five times two. Use skip counting to find five times nine.

In this question, we’re asked to find five times two and five times nine. And we’re told to use the chart to help us. We’re also told to use the chart to help us skip count by five: five, 10, 15, 20, 25, 30, 35, 40, 45, 50. To help us find five times two, we need to skip count by five twice: five, 10. Five times two or two times five equals 10.

To find five times nine, we’ll need to skip count in fives nine times: five, 10, 15, 20, 25, 30, 35, 40, 45. Five times nine is 45.

To help us multiply by five, we used the chart to skip count by fives. Five times two is 10. And five times nine is 45.

Consider the following diagram. One times five equals five. Two times five equals 10. Three times five equals 15. We notice that when we multiply by five, each row is five more than the previous one. Find the result of the following. Four times five equals what. Find the result of the following. Five times five equals what.

In this question, we’re being asked to find four times five and five times five. And we’re told to use the diagram or the model to help. When we multiply by five, each row is five more than the previous one. One times five is five, and two times five is 10. We know that 10 is five more than five. 15 is five more than 10.

So to find four times five, we need to find the number which is five more than 15: five, 10, 15, 20. Four times five equals 20. And we know that five times five is five more than 20. Five times five is 25. One times five is five. Two times five is 10. Three times five is 15. Four times five is 20. And five times five is 25. To find the missing products, we counted in fives.

Find the missing product. Eight times five equals what.

In this question, we’re asked to find the product of eight times five. The product is the number we get when we multiply eight by five or five by eight. To find eight times five, we could skip count in fives eight times: five, 10, 15, 20, 25, 30, 35, 40. We counted in fives eight times. The product of eight times five is 40.

What have we learned in this video? We’ve learned how to use models to help us multiply by five. We’ve also learned how to recite the five times table.

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