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Multiplying and dividing by three | Year 3 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 = 15
5 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 3 Mathematics
| 1. How can I multiply a number by 3? |  |
Ans. To multiply a number by 3, you simply need to add the number to itself two more times. For example, to multiply 4 by 3, you would calculate 4 + 4 + 4 = 12.
| 2. What is the significance of multiplying by 3 in mathematics? | |
Ans. Multiplying by 3 is important in mathematics as it helps in understanding multiplication concepts such as repeated addition and multiplication tables. It also helps in developing mental math skills.
| 3. How can I divide a number by 3? | |
Ans. To divide a number by 3, you simply need to divide the number by 3. For example, to divide 12 by 3, you would calculate 12 ÷ 3 = 4.
| 4. Why is dividing by 3 useful in mathematics? | |
Ans. Dividing by 3 is useful in mathematics as it helps in understanding division concepts such as sharing and grouping. It also helps in developing problem-solving skills.
| 5. How can multiplying and dividing by three be applied in everyday life situations? | |
Ans. Multiplying and dividing by three can be applied in everyday life situations such as calculating recipes, dividing a budget among friends, or determining discounts on sale items. It helps in developing practical math skills that are useful in various real-life scenarios.
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Nov 17, 2024 Last updated |
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