GenX-Education
  • 3 months ago
Transcript
00:00This week in Maths we will be learning about word problems using addition and subtraction.
00:09Can you remember all the words that mean the same as add?
00:14There is add, addition, plus, total, sum, altogether and more than.
00:27These words will be really important when helping us to solve word problems with addition.
00:35Can you remember all the words that mean the same as take away?
00:40There is subtract, minus, subtraction, take away, difference between.
00:52These words will be really important when helping us to solve word problems using subtraction.
00:59Let's read this word problem.
01:02Ahmed has 7 pens, Rashid has 4 pens, how many pens do they have altogether?
01:14The first thing that we have to do is highlight the numbers in our word problem.
01:22In this word problem the numbers we can see are 7 and 4.
01:28The next thing that we have to look out for are the important words that tell us whether
01:35we have to add or subtract.
01:39In this word problem we can see the word altogether.
01:46Altogether means add.
01:48So in this word problem we have to add.
01:537 plus 4.
01:54Now you can use different things to help solve that problem.
01:58You can use your fingers, you can use a number line, you can use pictures.
02:04Here are pictures.
02:05Here is 7 plus 4.
02:08We know this is 7, 8, 9, 10, 11.
02:16So our answer is 11.
02:20Let's read this word problem.
02:22There are 9 elephants, 5 more elephants join them, how many elephants are there in total?
02:34The first thing we have to do is highlight the numbers in the word problem.
02:40In this word problem we can see the numbers 9 and 5.
02:46The next thing we have to look out for are the important words that tell us whether we
02:52have to add or subtract.
02:55In this word problem we can see the word more and we can also see the word total.
03:04More and total mean add.
03:07So for this word problem we must add.
03:119 plus 5.
03:14Again you can use your number line, you can use your fingers, you can use pictures to
03:18help you.
03:199 elephants plus 5 elephants.
03:23We know this is 9, 10, 11, 12, 13, 14.
03:31So there are 14 elephants.
03:35Let's read this word problem.
03:38Fatima has 12 cupcakes, Sarah eats 4 of them, how many cupcakes are left?
03:48Can you remember the first thing we have to do?
03:53That's right, we have to highlight the numbers.
03:57The numbers in this word problem are 12 and 4.
04:02Now we have to look out for the words that tell us whether we have to add or subtract.
04:08We can see the word eat.
04:11So we know that the number is going to get less because when you eat something you take
04:15it away.
04:17Also we can see the sentence how many are left.
04:22When you see how many are left it means we have to subtract.
04:2912 take away 4.
04:32You can use your number line, you can use different things to help you to subtract.
04:37Here we have 12 cupcakes, let's take 4 away.
04:411, 2, 3, 4 and we can count how many are left.
04:461, 2, 3, 4, 5, 6, 7, 8.
04:5412 take away 4 equals 8.
04:59Let's read this word problem.
05:01There are 20 giraffes, 8 giraffes run away, how many are left?
05:10Can you remember the first thing we have to do?
05:15That's right, we have to highlight the numbers.
05:19In this word problem we can see the numbers 20 and 8.
05:25Now we have to look for the important words.
05:28We can see in this word problem it says how many are left.
05:34When we see how many are left it means we have to subtract.
05:4020 take away 8.
05:44Here we have 20 giraffes, let's take 8 away.
05:481, 2, 3, 4, 5, 6, 7, 8 and we can count how many are left.
05:581, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
06:0820 take away 8 equals 12.
06:12When you are solving word problems just remember to highlight the numbers and find the important
06:20words so you know whether to add or subtract.
06:25Happy solving!