§2.7 Mixed Exercises

C2 Numbers & Operations
Mr. Fintelman (FNL)
Tuesday October 22nd
2024

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C2 Numbers & Operations
Mr. Fintelman (FNL)
Tuesday October 22nd
2024

Slide 1 - Tekstslide

Date
Tuesday October 22nd
Paragraph
§2.7 Mixed Exercises
Pages from the handbook
Pag. 88-89
Subject
Mixed Exercises
Today is the day...

Slide 2 - Tekstslide

I can already…
  1. … divide fractions.

Prior Knowledge

Slide 3 - Tekstslide

Dividing fractions
32÷41=
52÷74=

Slide 4 - Tekstslide

Dividing fractions
32÷41=3214=
52÷74=5247=

Slide 5 - Tekstslide

Dividing fractions
32÷41=3214=38=232
52÷74=5247=2014=107

Slide 6 - Tekstslide

After this lesson, I can…
  1. … /do mixed exercises/

Goals

Slide 7 - Tekstslide

An office building has 12 floors. Each floor has 35 office rooms. The caretaker changes 5 lightbulbs on every floor every week.
How many lightbulbs does he change in a year?

Slide 8 - Open vraag

Reading exercises
An office building has 12 floors. Each floor has 35 office rooms. The caretaker changes 5 lightbulbs on every floor every week.
How many lightbulbs does he change in a year?



Slide 9 - Tekstslide

Reading exercises
An office building has 12 floors. Each floor has 35 office rooms. The caretaker changes 5 lightbulbs on every floor every week.
How many lightbulbs does he change in a year?

The caretaker changes 5 lightbulbs per floor every week. There are 12 floors, so every week he changes: 5 × 12 = 60 lightbulbs.
In a year, there are 52 weeks, so the total number of lightbulbs he changes in a year is: 60 × 52 = 3120 lightbulbs.

Slide 10 - Tekstslide

An English teacher buys textbooks for his class at a price of €7.50 per book. Every book has 60 pages. In total, he pays €225.
How many books did he buy?

Slide 11 - Open vraag

Reading exercises
An English teacher buys textbooks for his class at a price of €7.50 per book. Every book has 60 pages. In total, he pays €225.
How many books did he buy?



Slide 12 - Tekstslide

Reading exercises
An English teacher buys textbooks for his class at a price of €7.50 per book. Every book has 60 pages. In total, he pays €225.
How many books did he buy?

To find the number of books, divide the total amount spent by the price per book:

                                               books.

Thus, the teacher bought 30 books.

7.50225=30

Slide 13 - Tekstslide

Exercise 2abc - Pag. 88
1318+5=
38263=
583=

Slide 14 - Tekstslide

Exercise 2abc - Pag. 88
1318+5=31+5=26
38263=38123=23
583=5(24)=5+24=19

Slide 15 - Tekstslide

Exercise '4b' math snake - Pag. 88

Slide 16 - Tekstslide

Exercise '4b' math snake - Pag. 88

Slide 17 - Tekstslide

Exercise 6 - Pag. 88
Calculate the product of hcf(24, 30) and lcm(24, 30).

hcf(24, 30) =

lcm(24, 30) =

Slide 18 - Tekstslide

Exercise 6 - Pag. 88
Calculate the product of hcf(24, 30) and lcm(24, 30).

hcf(24, 30) = 6

lcm(24, 30) = 120


6120=720

Slide 19 - Tekstslide

Exercise 9ab - Pag. 89
Calculate or write down not possible (n.p).


7777=
7777=

Slide 20 - Tekstslide

Exercise 9ab - Pag. 89
Calculate or write down not possible (n.p).


7777=490=0
7777=049=n.p.

Slide 21 - Tekstslide

Exercise 9c - Pag. 89
Calculate or write down not possible.


7÷777+7777=

Slide 22 - Tekstslide

Exercise 9c - Pag. 89
Calculate or write down not possible.


7÷777+7777=
149+7147=
49+27=4914=35

Slide 23 - Tekstslide

Worktime
You work neatly by…
  1. … reading the theory (again) before asking a question to your classmate.
  2. raising a hand before asking a question to the teacher.
  3. … if the teacher is busy, remember your question and move on.
Help:
Exercises: 1, 2, 3, 4, 6, 8 and 9.
Assignments:
Pages: 88-89
Exercises: 1, 2, 3, 4, 6, 8 and 9.
Assignments from the planning of WEEK 1:
Extra:
Exercises: 5, 7, 10, 11 and 12.

Slide 24 - Tekstslide

Now I can…
  1. … do calculations with negative fractions.
Reflection

Slide 25 - Tekstslide