**Scientific notation on a calculator worksheet :**

Worksheet on scientific notation on a calculator is much useful to the students who would like to practice problems on writing numbers in scientific notation.

1. Simplify the expression given below using calculator and write your answer in scientific notation.

(4x10⁵) + (0.1x10⁷)

2. Multiply using calculator and write your answer in scientific notation.

(3.2 x 10⁵) x (26.7 x 10³)

3. The table shows the approximate areas for three continents given in square meters. What is the total area of these three continents ? Write the answer in scientific notation using more appropriate units.

**Question 1 :**

Simplify the expression given below using calculator and write your answer in scientific notation.

(4x10⁵) + (0.1x10⁷)

**Answer :**

**Step 1 : **

Find 4x10⁵ + 0.1x10⁷

Enter 4E5 + 0.1E7 on your calculator.

**Step 2 : **

Write the results from your calculator : 1.4E6.

Write this number in scientific notation :

(4x10⁵) + (0.1x10⁷) = 1.4 x 10⁶

**Question 2 :**

Multiply :

(3.2 x 10⁵) x (26.7 x 10³)

**Answer :**

**Step 1 :**

Find (3.2 x 10⁵) x (26.7 x 10³)

Enter 3.2E5 x 26.7E3 on your calculator.

**Step 2 :**

Write the results from your calculator : 8.544E9.

Write this number in scientific notation :

(3.2 x 10⁵) x (26.7 x 10³) = 8.544 x 10⁹

**Question 3 :**

The table shows the approximate areas for three continents given in square meters. What is the total area of these three continents ? Write the answer in scientific notation using more appropriate units.

**Answer :**

**Step 1 : **

Find 4.4 x 10¹³ + 3.02 x 10¹³ + 1.04 x 10¹³

Enter 4.4E13 + 3.02E13 + 1.04E13 on your calculator.

**Step 2 : **

Write the results from your calculator : 8.46E13.

Write this number in scientific notation :

8.46 × 10¹³ square meter

**Step 3 :**

Since square kilometers is more appropriate, lets convert square meters into square kilometers.

Write this number in scientific notation :

Because 1 km = 1,000 m, we have

1 km² = 1000² m²

1 km² = 10⁶ m²

So, to convert square meters into square kilometers, we have to divide by 10⁶.

8.46 × 10¹³ m² = (8.46 × 10¹³ / 10⁶) km²

8.46 × 10¹³ m² = 8.46 × 10⁷ km²

Hence, the total area of these three continents is

8.46 × 10⁷ square kilometers

After having gone through the stuff given above, we hope that the students would have understood how to use calculator to write a number in scientific notation.

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