Multiplication 1 Minute Math
Video Content
Hi and welcome to mathematics, in this lesson you'll learn to do basic multi digit multiplication. This can be tricky at first, but don’t get discouraged. It might just take some extra time and practice but you will get the hang of it. One thing I want to mention before we start is that multi-digit multiplication will be much easier for you to learn if you memorize your basic multiplication facts but if you don’t have it memorized then make sure you have the multiplication table handy when you are doing your practice problems. The best way to learn this is to jump right in. Let's try 137 x 5 As you can see, this is a 3-digit number times a 1-digit number. When you get a problem like this and the numbers are written side-by-side, you need to rearrange it in place value stacked form with all the place values lined up. This is the same method you use for adding and subtracting larger numbers. Now you might remember that with multiplication the order of the problem doesn’t matter. You can put whatever number on the top or the bottom but it's best to put the number with the most digits on the top and the one with the fewest digits on the bottom. Then draw an answer line below and put an ‘x’ symbol on the left so you won’t forget you're multiplying these digits. Now you're ready to learn the procedure for multiplying. Basically what we are going to do is break up this big multiplication problem into a series of small multiplication problems or steps. That small step involves multiplying the digit in the bottom number by the digit in the top number. Now in our problem, we have one digit at the bottom and we are going to multiply it by each of the digits on the top number. Now since the top number has three digits, that means our answer will have three small multiplication steps. Firstly you multiply the digit 5 by the number on the top 7. You always start with the ones place and walk away from right to left. So, 5 x 7 = 35 We carry over the first digit of our answer (3) to the top of the next number as a remainder; we write the number 5 below the answer line in the ones place value. Now we get to the second step, we multiply the bottom number 5 by the top number to the left 3 and get 15 + the remainder 3 at the top that we carried over to equal 18. And here also our answer is a two-digit number, all we need to do is to leave the 8 on the answer line in the tens value place and carry the one to the next and last number on the top. Now the last multiplication line, you do the same as before and multiply 5 by 1 5 x1= 5 But, remember we carried a number initially which is 1, add 1 to 5 1+ 5 = 6 Now our final answer is 685 Wasn’t that easy? Now try another one on your own: 617 x 4 Thanks for watching this educational video on TeacherTube.
Hi and welcome to mathematics, in this lesson you'll learn to do basic multi digit multiplication. This can be tricky at first, but don’t get discouraged. It might just take some extra time and practice but you will get the hang of it. One thing I want to mention before we start is that multi-digit multiplication will be much easier for you to learn if you memorize your basic multiplication facts but if you don’t have it memorized then make sure you have the multiplication table handy when you are doing your practice problems. The best way to learn this is to jump right in. Let's try 137 x 5 As you can see, this is a 3-digit number times a 1-digit number. When you get a problem like this and the numbers are written side-by-side, you need to rearrange it in place value stacked form with all the place values lined up. This is the same method you use for adding and subtracting larger numbers. Now you might remember that with multiplication the order of the problem doesn’t matter. You can put whatever number on the top or the bottom but it's best to put the number with the most digits on the top and the one with the fewest digits on the bottom. Then draw an answer line below and put an ‘x’ symbol on the left so you won’t forget you're multiplying these digits. Now you're ready to learn the procedure for multiplying. Basically what we are going to do is break up this big multiplication problem into a series of small multiplication problems or steps. That small step involves multiplying the digit in the bottom number by the digit in the top number. Now in our problem, we have one digit at the bottom and we are going to multiply it by each of the digits on the top number. Now since the top number has three digits, that means our answer will have three small multiplication steps. Firstly you multiply the digit 5 by the number on the top 7. You always start with the ones place and walk away from right to left. So, 5 x 7 = 35 We carry over the first digit of our answer (3) to the top of the next number as a remainder; we write the number 5 below the answer line in the ones place value. Now we get to the second step, we multiply the bottom number 5 by the top number to the left 3 and get 15 + the remainder 3 at the top that we carried over to equal 18. And here also our answer is a two-digit number, all we need to do is to leave the 8 on the answer line in the tens value place and carry the one to the next and last number on the top. Now the last multiplication line, you do the same as before and multiply 5 by 1 5 x1= 5 But, remember we carried a number initially which is 1, add 1 to 5 1+ 5 = 6 Now our final answer is 685 Wasn’t that easy? Now try another one on your own: 617 x 4 Thanks for watching this educational video on TeacherTube.
