Multiplying/dividing by powers of 10

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 2

Good afternoon!

Schedule: 

• Learning goals 
• Last time
• Multiplying and dividing by powers of 10
• Worksheet (3 levels)

Learning goals 

At the end of this lesson I can:

• Multiply decimal numbers by various powers of 10
• Divide decimal numbers by various powers of 10 
• Choose an appropriate level for my learning 

What did we do last time?

Give a power of 10

True 

False

2.89 ⋅ 10 = 28.9

41.39 ÷ 10 = 4.139

2.89 ⋅ 1000 = 289

517 ÷ 100 = 51.7

6.986 ⋅ 100 = 6989

1.89 ÷ 1000 = 0.0089

Multiplying by powers of 10

2.987 ⋅ 10 = 29.87

Dividing by powers of 10

2.987 ÷ 10 = 0.2987

Multiplying by powers of 10

2.987 ⋅ 10 = 29.87

10 = 10¹

^{Decimal moves 1 place to the right}

Dividing by powers of 10

2.987 ÷ 10 = 0.2987

10 = 101

Decimal moves 1 place to the left

23.56 ÷ 100 =

1. 2.356
2. 235.6
3. 0.2356
4. 2356

23.56 ⋅ 100 =

1. 2.356
2. 235.6
3. 0.2356
4. 2356

Worksheet

Choose a worksheet level: 

Level 1: Multiplying and dividing in standard form 

Level 2: Multiplying and dividing in exponent form 

Level 3: Multiplying and dividing in exponent form (with negative exponents)

Choose a level and work on that worksheet from ManageBac: Files: Unit 2

done? Mark your work! 

Work

p. 145 : 7H             1, 2, 3bfjn, 4

p. 146 : 7I                1, 2, 3cgko, 4