María Virtudes Muñoz

I.E.S. FERNANDO III EL SANTO / PROYECTO BILINGÜE A.N.L.: MATHS 1

MATHS

EXERCISES WITH FRACTIONS 2º ESO

1) 40 students joined the soccer club. 5/8 of the students were boys. How many girls joined the soccer club? 2) Marcus had $450. He spent 2/5 of it on a DVD player. He then spent 1/3 of the remaining money on a jacket. How much money did Macus have left? 3) 2/3 of my students play the piano. 1/2 of the students who play the piano also play the vioilin. 1/4 of those students also play the flute. What fraction of my students play all three instruments? 4) 1/3 of a pole is painted red. 1/2 of it is painted blue. Three feet of the pole is painted green. What is the height of the pole? 5) Pete the Painter can paint 5/6 of a room in 90 minutes. How many minutes will it take Pete to paint the entire room? EXERCISES WITH WHOLE NUMBERS 2º ESO 6) Some animal heads were stored at the veterinary office in a freezer. They were to be tested to see if the animals had rabies. If they had 12 specimens and could test one every half-day (a day being a workday of about 8 hours), how many days would it take to test them all? 7) A pony in a pony ride takes 35 seconds to make one circuit around a circle. The circumference of the circle is 105 m. What is the average speed of the pony in meters per second? 8) Christina carefully monitored the temperature in a reaction flask as it was slowly heated in a heating blanket. The temperature rose 42 degrees in 6 minutes. What was the rate of temperature rise in degrees per minute? 9) Because of sea floor spreading, the Atlantic Ocean is getting wider at a rate of about one cm per year. At that rate of expansion, how much wider will the Atlantic be at the end of one-fourth of a century? 10) Solve the following operations:

a) =−−⋅−322 3)45(28

b) ( )[ ] =⋅−⋅−−⋅⋅− 224573352

c) =

−⋅−⋅+3

123

3

4

2

95

e) =⋅− 5'217'04'1

f) =−+⋅− )2

3

10

1

3

2(3

3

1