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Multiplying and dividing by three | Year 4 Mathematics PDF Download
Multiplying by 3
Example 1: Pencils: I have 4 groups of 3 pencils each. To find the total number of pencils, we can use repeated addition:
3 + 3 + 3 + 3 = 12
Alternatively, this can be represented as 4 groups of 3:
4 x 3 = 12
Example 2: Triangles: If we have 5 triangles with each having 3 sides, we calculate the total number of sides using multiplication:
The repeated addition is 3 + 3 + 3 + 3 +3 = 155 x 3 = 15
Dividing by 3
When we say divide by 3, we mean distributing an amount or number into 3 equal groups.
Example: Marbles: Suppose we have 6 marbles and we want to divide them among 3 people equally. This means putting 6 marbles into 3 groups:
After sharing equally, each group will have 2 marbles.
So, 6 ÷ 3 = 2
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FAQs on Multiplying and dividing by three - Year 4 Mathematics
| 1. What is the significance of multiplying and dividing by three in mathematics? |  |
Ans. Multiplying by three increases a number by a factor of three, while dividing by three decreases a number by a factor of three. This can be useful in various mathematical operations and calculations.
| 2. How can multiplying and dividing by three be used in everyday life situations? | |
Ans. Multiplying and dividing by three can be helpful in tasks such as splitting a bill evenly among three people or calculating a 3-for-1 discount in a store.
| 3. Can multiplying and dividing by three help in mental math calculations? | |
Ans. Yes, practicing multiplying and dividing by three can improve mental math skills and make calculations quicker and more efficient.
| 4. How can students practice multiplying and dividing by three effectively? | |
Ans. Students can practice by using flashcards, online math games, or working on worksheets specifically designed for multiplication and division by three.
| 5. Are there any tricks or shortcuts for multiplying and dividing by three? | |
Ans. One trick is to double the number and then add the original number to get the result of multiplying by three. For division, one can divide by three and then double the result to check the accuracy.
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Dec 22, 2024 Last updated |
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