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Title: Scientific notations

Grade: 6-b Lesson: S2-L8

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Discussion: Step1 Step2 Step3 Step4 Step5

Step	Type	Explanation	Answer
1	Problem	Convert 0.000673 into scientific notation.
2	Step	Given number	0.000673
3	Step	Move the decimal point to the right of 0.000673 up to 4 places	The decimal point was moved 4 places to the right to form the number 6.73.
4	Step	Since the numbers are less than 10 the decimal is moved to the right. Hence, we use a negative exponent here	0.000673 ⇒ \$6.73 × 10^-4\$
5	Step	So, 0.000673 in scientific notation is \$6.73 × 10^-4\$.
6	Choice.A	This answer is incorrect because the scientific notation of the given number is \$6.73×10^-4\$, not \$6.73×10^-3\$	\$6.73×10^-3\$
7	Choice.B	This answer is incorrect because the scientific notation of the given number is \$6.73×10^-4\$, not \$5.73×10^-4\$	\$5.73×10^-4\$
8	Choice.C	This answer is correct because the scientific notation of the given number is \$6.73×10^-4\$	\$6.73×10^-4\$
9	Choice.D	This answer is incorrect because the scientific notation of the given number is \$6.73×10^-4\$, not \$6.33×10^-4\$	\$6.33×10^-4\$
10	Answer	Option	C
11	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Convert 0.000673 into scientific notation.

Step

Given number

0.000673

Step

Move the decimal point to the right of 0.000673 up to 4 places

The decimal point was moved 4 places to the right to form the number 6.73.

Step

Since the numbers are less than 10 the decimal is moved to the right. Hence, we use a negative exponent here

0.000673

⇒ \$6.73 × 10^-4\$

Step

So, 0.000673 in scientific notation is \$6.73 × 10^-4\$.

Choice.A

This answer is incorrect because the scientific notation of the given number is \$6.73×10^-4\$, not \$6.73×10^-3\$

\$6.73×10^-3\$

Choice.B

This answer is incorrect because the scientific notation of the given number is \$6.73×10^-4\$, not \$5.73×10^-4\$

\$5.73×10^-4\$

Choice.C

This answer is correct because the scientific notation of the given number is \$6.73×10^-4\$

\$6.73×10^-4\$

Choice.D

This answer is incorrect because the scientific notation of the given number is \$6.73×10^-4\$, not \$6.33×10^-4\$

\$6.33×10^-4\$

Answer

Option

Sumup

Can you summarize what you’ve understood in the above steps?

Discussion: Step1 Step2 Step3 Step4 Step5