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Biblioteka

Fractions and Decimals (GeoGebra)

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Posljednje ažuriranje over 4 years ago
32 questions
Napomena autora:

Students review their knowledge of decimals and place value, and practice converting between fractions and decimals.

Objectives:

  • Recognize the equivalence of simple fractions and decimals.

  • Convert terminating decimals to fractions. 0.23 = \frac{23}{100}.

  • Compare two fractions by using a calculator to convert the fractions to decimals: e.g. \frac{3}{5} \text{ and } \frac{13}{20}.

  • Add and subtract integers and decimals, including numbers with different numbers of decimal places.

  • Use known facts and place value to multiply simpledecimals by one-digit numbers: e.g. 0.8 \times 6.

  • Use the laws of arithmetic and inverse operations to simplify calculations with decimals.

  • Multiply and divide decimals with one or two decimal places by single-digit numbers: e.g. 13.7 \times 8,\ 4.35 \div 5.

Writing Decimals as Fractions

Mixed Numbers

You may utilize this embedded GeoGebra applet if you find it useful in completing the questions in this lesson.

Write the following decimals as fractions. The denominators should be written as a power of 10 (e.g. 10, 100, or 100). Use the math keyboard to enter in your answers as fractions. Do not simplify your answer.

Ex:

1
Pitanje 1
1.

0.5

1
Pitanje 2
2.

0.7

1
Pitanje 3
3.

0.15

1
Pitanje 4
4.

0.34

1
1
1
1

Use your answers from the question above to help answer the following:

1
Pitanje 9
9.

If there is one digit after the decimal point, what is the denominator if the corresponding fraction?

1
Pitanje 10
10.

If there are two digits after the decimal point, what is the denominator if the corresponding fraction?

1
Pitanje 11
11.

If there are three digits after the decimal point, what is the denominator if the corresponding fraction?

Write the following as mixed numbers using the math keyboard. Keep your denominators as powers of ten (e.g. 10, 100, or 100). Do not simplify the fractions yet, i

Ex:

1
1
1
1
1
1
1
1
1
1
1
1

Write the following decimals as fractions in simplest form.

1
Pitanje 24
24.

0.2

1
Pitanje 25
25.

0.6

1
Pitanje 26
26.

0.8

1
1
1
1
1
1
Pitanje 5
5.

0.72

Pitanje 6
6.

0.699

Pitanje 7
7.

0.708

Pitanje 8
8.

0.094

Pitanje 12
12.

1.7

Pitanje 13
13.

2.5

Pitanje 14
14.

3.54

Pitanje 15
15.

9.27

Pitanje 16
16.

5.114

Pitanje 17
17.

11.438

Pitanje 18
18.

8.005

Pitanje 19
19.

21.009

Pitanje 20
20.

9.422

Pitanje 21
21.

14.803

Pitanje 22
22.

16.002

Pitanje 23
23.

15.077

Pitanje 27
27.

0.5

Pitanje 28
28.

0.25

Pitanje 29
29.

0.75

Pitanje 30
30.

0.125

Pitanje 31
31.

0.375

Pitanje 32
32.

0.625