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I'm currently re-teaching my self maths to get into physics as i sucked at maths in school but now I am older I feel like actually learning it !
So I'm on a website which gave me a test quiz i got them all correct bar one but it won't tell me the answer so ill show you the question and my answer see if you can help work out where i have miscalculated.Solve the following problem with correct numbers of significant digits:
2.1 * 5.2 - 1.45 / 0.02303
My workings:
Rounded to lowest significant digits in the sum.
So my answer was: 4.6
But that's incorrect.
Any ideas where i went wrong in my steps?
So I'm on a website which gave me a test quiz i got them all correct bar one but it won't tell me the answer so ill show you the question and my answer see if you can help work out where i have miscalculated.Solve the following problem with correct numbers of significant digits:
2.1 * 5.2 - 1.45 / 0.02303
My workings:
1.45 / 0.2303 = 6.296135475466782457663916630482
2.1 * 5.2 = 10.92
10.92 - 6.296135475466782457663916630482 = 4.623864524533217542336083369518
Rounded to lowest significant digits in the sum.
So my answer was: 4.6
But that's incorrect.
Any ideas where i went wrong in my steps?