Scientific notation question 1 write in scientific notation...

SCIENTIFIC NOTATION Question 1 Write in scientific notation: 0.000123 and 64000000 Question 2 Express 7.23 x 10-3 as a number in standard notation. Question 3 (5.8 x 10-16) x (7.8 x 105) =? Question 4 (7.1 x 105) ÷ (1.9 x 10-3) = ? Question 5 (6.54 x 10-4)3 =? Question 6 The sixth root of 7.20 x 1038 =? SIGNIFICANT FIGURES AND ROUNDING Question 1 Give the correct number of significant figures for 2500, 2500. , 0.0043, 0.06050 Question 2 Give the answer to the correct number of significant figures: 7964 + 86.94 + 760 =? Question 3 Give the answer to the correct number of significant figures: 4.596 - 2.81 =? Question 4 Give the answer to the correct number of significant figures: (4.58 x 106) x (4.3198 x 10-19) = ? Question 5 Give the answer in scientific notation and to the correct number of significant figures: (7860) / (0.00001) =?

Transcript

00:01 Hey welcome to the video the scientific notation of me the following numbers would be that is 0 .00123 would be equal to 1 .23 into 10 to the power minus 4 and that of 6400000000 would be equal to 64 into 10 to the power 6.

00:28 And the scientific notation of a number is given and this in the standard form would be equal to 0 .00723.

00:47 The problem that is 5 .8 into 10 to the power 16 into 7 .8 into 10 to the power 5.

01:02 This on calculation we will get first we'll calculate the powers of 10 to 10 to the power 5 and 10 to the power minus 16 we would get 10 to the power minus 11 and 5 .8 into 7 .8 would give 45 .27 into 10 to the power minus 11 would be equal to 4 .527 into 10 to the power minus 11 would be equal to 4 .527 into 10 to 10 to the power minus 10 so this would be the scientific notation and next we have 6 root of 7 .20 into 10 to the power 38 here let's take the 7 .20 into 10 to the power 38 to be equal to 7 .20 into 10 to the power 36 into 100 so it should be equal to 7 .20 20 into 10 to the power 36 and this on taking root that is 6 root we would get the answer to me 2 .993 into 10 to the power 6 and here on rounding of this is 9 therefore plus 1 we would get the answer to be equal to 3 .0 into 10 to the power 6 and next we have to calculate the number of 6.

02:57 Significant figures here the number of significant figures would be equal to 2 and in case of 250 .0 .0 the number of significant figures will be equal to 4 and in case of 0 .03 the number of significant figures would be equal to 2 and in 0 .06050 the number of significant figures would be equal to 2 and in 0 .06050 the number of significant figures would be equal to and in case of the problem where 7964 plus 86 .94 plus 716, we would get the answer to be equal to 8810 .94.

03:45 And the number of significant figure would be equal to 6.

03:52 And in case of 4 .596 minus 2 .81, we would get the number of the number of significant figure would be equal to 6 .6.

04:00 Answer to be equal to 1 .786 and the number of significant figures would be equal to 4.

04:10 In case of the problem 4 .58 into 10 to the power 6 into 4 .319 into 4 .398 into 10 to the power minus 19.

04:26 On calculating this we would get the sum to be 19 .748.

04:35 Into 10 to the power minus 13...

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