WRITE WITH NUMBERS
OPERATIONS
TIPES OF DECIMALS
FRACTIONS
PROBLEMS
100

Three units and five hundredths

3.05

100

Round off to the nearest ten-thounsandth.

                        1.539969

1.54

100

Make the division and clasify 3/5

 0.6 is exact decimal

100

Express as a decimal number 2/9

0.2222222222222222222222222222222222222222222222222222222222222222222222222

100

How much cost a melon that weighs 2.41 kg if the price is 1.99 €/kg ?

2.14 · 1.99 = 4.8 €

200

Forty-three thousandths

0.043

200

Round off to the division of 17 : 2.45 to the nearest hundredth.

6.938     to     6.94

200

Make the division and clasify 2/3

0.666666666666666... pure repeating decimal

200

Express as a decimal number 5/3

1.666666666666666666666666666666666666666666666666666666666666666

200

Two and a half kilos of apples cpst 4€. How much is one kilo of apples?

4 : 2.5 = 1.6 €

300

eight hundreds and seven tenths

800.7

300

Divide 23.587 : 5.1

4.625

300

Make the division and clasify 1/18

0.05555555555... mixed repeating decimal

300

Express as a decimal number 17/110

0.1545454545454545454545454545454545454545454545454545454545454545454545454545454545454545454

300

A worker in a bakery uses 8.2 kg of flour to make 15 identical cakes. How much flour does each cake need?

8.2 : 15 = 0.5466666 kg

 Each cake has 0.5466666... kg = 0.547

400

two hundredths and one thousandths

0.021

400

Solve:

3.6 - 0.5 · (4 - 2.26)

2.73

400

Make the division and clasify 71/330

0.215151515151515151515151515... mixed repeating decimal

400

Express as a fraction 1.6

8/5

500

five hundred and eight ten-thousandths

0.0501

500

Calculate:

5.4 -1.5 · [ 3.2 +10 · (0.63 - 1.25) ]

9.9

500

Solve and clasify: square root of 2

1.4124135  irrational decimal

500

Express as a fraction 0.333333333333333333...

1/3

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