2.3 Fractions

C2 Numbers & Operations
Mr. Fintelman (FNL)
Monday October 7th
2024

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C2 Numbers & Operations
Mr. Fintelman (FNL)
Monday October 7th
2024

Slide 1 - Tekstslide

Date
Monday October 7th 2024
Paragraph
§2.3 Fractions
Pages from the handbook
Pag. 64-67
Subject
Fractions
Adding and subtracting fractions
Today is the day...

Slide 2 - Tekstslide

I can already…
  1. … calculate the hcf and lcm.

Prior Knowledge

Slide 3 - Tekstslide

Hcf and lcm
hcf(20,56)=
lcm(12,15)=
hcf(28,77)=
lcm(16,40)=

Slide 4 - Tekstslide

Hcf and lcm
hcf(20,56)=4
lcm(12,15)=60
hcf(28,77)=7
lcm(16,40)=80

Slide 5 - Tekstslide

After this lesson, I can…
  1. … simplify fractions.
  2. … turn mixed numbers into improper fractions and vice versa.
  3. … add and subtract fractions.

Goals

Slide 6 - Tekstslide

Fractions

Slide 7 - Tekstslide

Simplify Fractions
96=...
3618=...
12525=...

Slide 8 - Tekstslide

Simplify Fractions
96=32
3618=21
12525=51

Slide 9 - Tekstslide

Mixed numbers and improper fractions

Slide 10 - Tekstslide

Simplify Fractions
625=...
985=...
417=...

Slide 11 - Tekstslide

Simplify Fractions
625=66+6+6+6+1=461
958=99+9+9+9+9+9+4=694
417=44+4+4+4+3=443

Slide 12 - Tekstslide

Simplify Fractions - Quicker version
625=66×4+1=461
958=99×6+4=694
417=44×4+3=443

Slide 13 - Tekstslide

Adding fractions

Slide 14 - Tekstslide

Adding fractions - Using lcm

Slide 15 - Tekstslide

Adding Fractions
92+94=...
21+94=...
85+32=...

Slide 16 - Tekstslide

Adding fractions
92+94=96=32
21+94=2×91×9+2×94×2=189+188=1817
85+32=8×35×3+8×38×2=2415+2416=2431=1247

Slide 17 - Tekstslide

Adding fractions - According to the book
92+94=96=32
21+94=189+188=1817
85+32=2415+2416=2431=1247

Slide 18 - 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: N/A
Assignments:
Pages: 64-67
Exercises: 22, 24, 26 and 27.
Assignments from the planning of WEEK 1:
Extra:
Exercises: N/A

Slide 19 - Tekstslide

Now I can…
  1. … simplify fractions.
  2. … turn mixed numbers into improper fractions and vice versa.
  3. … add and subtract fractions.
Reflection

Slide 20 - Tekstslide

Date
Tuesday October 8th 2024
Paragraph
§2.3 Fractions
Pages from the handbook
Pag. 68-69
Subject
Multiplying Fractions
Today is the day...

Slide 21 - Tekstslide

I can already…
  1. … simplify fractions.
  2. … turn mixed numbers into improper fractions and vice versa.
  3. … add and subtract fractions.

Prior Knowledge

Slide 22 - Tekstslide

Simplify Fractions
712+74=...
9521=...
1815+1312=...

Slide 23 - Tekstslide

Adding fractions
712+74=716=272
9521=2×95×22×91×9=1810189=181
1815+1312=18×1315×13+18×1318×12=234195+234216=234411=1234177=17859

Slide 24 - Tekstslide

Adding fractions - According to the book
712+74=716=272
9521=1810189=181
1815+1312=234195+234216=234411=1234177=17859

Slide 25 - Tekstslide

After this lesson, I can…
  1. … multiply fractions.

Goals

Slide 26 - Tekstslide

Multiplying Fractions

Slide 27 - Tekstslide

Multiplying Fractions
9294=...
11673=...
32÷54=...

Slide 28 - Tekstslide

Multiplying Fractions
9294=9924=818
11673=11763=7718
32÷54=3425=1210=65

Slide 29 - Tekstslide

Exercise 33 (Homework)

Slide 30 - 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: N/A
Assignments:
Pages: 64-67
Exercises: 22, 24, 26, 27, 30, 32, 33, 35 and 36.
Assignments from the planning of WEEK 1:
Extra:
Exercises: 38

Slide 31 - Tekstslide

Now I can…
  1. … multiply fractions.
Reflection

Slide 32 - Tekstslide