Fractions and decimals (T3 W1)
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Fractions represent parts of a whole. For example, if a pizza is cut into 4 equal slices and you have 1 slice, you have 1/4 of the pizza. Decimals are another way to express parts of a whole, such as 0.25, which is equivalent to 1/4. Understanding how to convert between fractions and decimals is essential for solving various mathematical problems.
Let's convert the fraction 3/4 to a decimal. To do this, divide the numerator (3) by the denominator (4). When you perform the division, 3 Γ· 4 = 0.75. Therefore, 3/4 is equal to 0.75. Another example is converting 1/2 to a decimal. Dividing 1 by 2 gives us 0.5, so 1/2 = 0.5.
Now, let's practice together. I will write a few fractions on the board, and you will help me convert them to decimals. For example, what is 2/5 as a decimal? To find this, divide 2 by 5. What do you get? (Students will respond with 0.4). Great! Now, let's try 3/10. What is that as a decimal? (Students will respond with 0.3). Keep practicing with me as we convert more fractions!
Now it's your turn to work independently. Solve the following problems: 1) Convert 4/5 to a decimal. 2) What is 0.6 as a fraction? 3) If you have 3/8 of a chocolate bar, what is that as a decimal? Show your working for each problem. Remember to check your answers with a partner once you are done!
Answer: 0.25
1 divided by 4 equals 0.25.
Answer: 1/2
0.5 is the decimal representation of the fraction 1/2.
Answer: 0.6
3 divided by 5 equals 0.6.
Answer: 3/4
0.75 is equivalent to the fraction 3/4.
Answer: 0.2
2 divided by 10 equals 0.2.
Answer: 3/10
0.3 is equivalent to the fraction 3/10.
Answer: 0.625
5 divided by 8 equals 0.625.
Answer: 0.7
7 divided by 10 equals 0.7.