4th Grade Mathematics — Fractions and Decimals — Parts of God's Whole
Students will learn how to convert between fractions and decimals and understand when each form is most useful.
Fractions and decimals are two different ways to write the same number, just like English and Spanish are two ways to say the same word. Knowing how to switch between them is an important math skill.
To convert a fraction to a decimal, divide the numerator by the denominator. For example, 3/4 = 3 ÷ 4 = 0.75. Try 1/5 = 1 ÷ 5 = 0.2. Some fractions, like 1/3, create repeating decimals: 1 ÷ 3 = 0.333...
To convert a decimal to a fraction, use the place value. The decimal 0.6 means 6/10, which simplifies to 3/5. The decimal 0.25 means 25/100, which simplifies to 1/4. Always simplify your fraction when possible.
Both fractions and decimals are useful. Fractions are great for cooking and sharing equally. Decimals are great for money and measurement. As Colossians 3:23 reminds us, we should do all our work — including math — with excellence, as if working for the Lord. Mastering both forms shows diligence and careful thinking.
Create a conversion chart with two columns. In one column, write these fractions: 1/2, 1/4, 3/4, 1/5, 2/5, 1/8, 3/8, 1/10. In the other column, write the decimal equivalent for each. Decorate your chart and use it as a reference tool.