Mathematics 3 ESO – Unit 1 REAL NUMBERS page 11 activity 58
1 – Complete with the word “factor/multiple”:
- a) 5 is a ___________ of 35
- b) 16 is a ___________ of 2
- c) 105 is a ___________ of 3
- d) 6 is a ___________ of 54
- e) 10 is a ___________ of 100
- f) 100 is a ___________ of 10
2 – Watch the video on “Standard index form” and answer:
- a) What did Archimedes calculate?
- b) Who came up with a good way to write numbers that are really big or really small? How did he call it?
- c) Can the number before that multiplies the power be 10? Can it be greater than 10?
- d) When is the exponent positive? And when is it negative?
- e) How do we find the value of the exponent in very large numbers?
- f) How do we find the value of the exponent in very small numbers?
- g) When doing calculations with Standard form, what rules do we use?
- h) If when multiplying the numbers before the exponents we get a number equal or greater than 10… What do we do?
- i) Solve:
- I) 3.2ˑ103 ˑ 6.5ˑ106
- II) 4.79ˑ10-3 ˑ 5.2ˑ10-9
- III) 1.12ˑ10-3 ˑ 4.8ˑ107
