Division means splitting a number into equal groups.
In the last lesson, you learned how to divide numbers by 3.
Now, let’s learn how to divide numbers by 4. 😎
👉 There are 3 ways to divide by 4:
1. Divide by grouping.
2. Divide by repeated subtraction.
3. Divide by multiplying.
You can use any of these methods! 🤗
👉 Let's look at an example.
16 ÷ 4 = ?
To divide a number by 4 using grouping, just split it into 4 equal groups. The number in each group is the answer.
Let's try it!
Here, we need to split the number 16 into 4 equal groups.
16 ÷ 4 = 4 ✅
To divide a number by 4 using repeated subtraction, subtract 4 from it over and over again, until you reach 0. The number of subtractions is the answer to the division problem.
Let's try this method too!
16 ÷ 4 = ?
Start at 16 and subtract 4 over and over again.
How many times did you subtract? 🤓
Very good! 👍 4 times.
So,
16 ÷ 4 = 4
Secret trick: Turn any division equation into a related multiplication equation!
If you see 16 ÷ 4 = ? , think about it's whole-part diagram:
Are you missing a part or the whole? We're missing a part.
We can rewrite that same whole-part diagram as a multiplication equation:
4 x ? = 16
Do you know what number times 4 equals 16?
Yes, 4 x 4 is 16.
So we know that 16 ÷ 4 = 4! 🎉
Remember: Division is the opposite of multiplication. If you know your multiplication tables, then you already know your division, too!
Tip: Try to get really fast at division, just like you did with multiplication. Memorize all the answers so you just know them.
28 ÷ 4 = ?
We made 4 groups of 7.
28 ÷ 4 = 7
Now, let's find the answer using repeated subtraction.
We got 7 again.
28 ÷ 4 = 7
Secret trick: Turn 28 ÷ 4 = ? into a multiplication problem in your head quickly.
Just think about the whole part diagram. Are you missing a part or the whole?
You're missing a part. Let's write a multiplication problem with a missing part:
4 x ? = 28
Multiplication and division are related. The same whole-part diagram can make both a division and a multiplication equation!
So what number times 4 equals 28?
4 x 7 = 28!
So we know that 28 ÷ 4 = 7! 🎉
Memorize these: 😺
4 ÷ 4 = 1
8 ÷ 4 = 2
12 ÷ 4 = 3
16 ÷ 4 = 4
20 ÷ 4 = 5
24 ÷ 4 = 6
28 ÷ 4 = 7
32 ÷ 4 = 8
36 ÷ 4 = 9
40 ÷ 4 = 10
Great job! Now, try the practice. It'll help you memorize them.