Mastering Multiplication with Decimals

The video tutorial covers day four of working from home, focusing on multiplying by decimals such as 0.1, 0.01, and 0.001. The teacher reviews the concept of decimals as fractions and demonstrates how to multiply using mental math. Students practice with problems and word problems, and the session concludes with homework instructions and a math challenge.

What is the goal of today's lesson?

• To learn about fractions

• To multiply by 0.1, 0.01, and 0.001 using mental math

• To divide by 0.1, 0.01, and 0.001

• To add and subtract decimals

What is 0.01 equivalent to in fraction form?

• 1/100

• 1/1000

• 1/10

• 1/10000

How many zeros are there in 10,000?

• 3

• 5

• 2

• 4

When multiplying 245 by 0.1, where should the decimal point be placed?

• After the first digit

• After the second digit

• After the third digit

• After the fourth digit

What is the product of 245 and 0.1?

• 24.5

• 0.245

• 2.45

• 2450

If each mini tissue box is 0.1 meters wide, what is the total width of 62 boxes?

• 0.62 meters

• 6.2 meters

• 620 meters

• 62 meters

How long is the line of 804 cubes if each cube is 0.01 meters long?

• 8.04 meters

• 80.4 meters

• 804 meters

• 0.804 meters

How many kilograms are in a gram?

• 0.01

• 0.001

• 0.0001

• 0.1

What is the weight in kilograms of 54 grams of sugar?

• 0.054 kg

• 0.0054 kg

• 0.00054 kg

• 0.000054 kg

What is the answer to the challenge question number 10?

• 0.0026

• 0.026

• 0.26

• 2.6