LO: To add and subtract fractions - same denominators

Place the fractions in the right place

Keywords

Numerator

Denominator

Like

Equivalent

Proper

Improper

Hint: Do the ones you know first :-)

LO: To add and subtract fractions - same denominators

Copy and complete the following operations

[pay attention to the units]

• 2cm + 3cm = â€¦..
• 3m + 23m = â€¦..
• 12kg - 2kg = â€¦.
• 2m + 100cm = â€¦.
• 12cm - 10mm = â€¦.
• 4km + 500m = â€¦.

7) On my way to school I walk for 1,600 m, then travel 5km on the underground and finally walk 800m. What distance do I travel?

Numerator

Denominator

Keywords

Like

Equivalent

Proper

Improper

Give students 2 mins.

• Spend time discussing those cases where students were adding wrong units.
• What concept have they learnt here? Hopefully that they cannot add or subtract numbers with different units
 Units (context) Fractions (words) Fractions (numbers) 2cm + 3cm 2 sevenths + 3 sevenths ​ 4L + 5L __ eighths + 2 ____ ​ 6m + 4__ 6 quarters + __ quarters ​ 5__ + 6kg 5 ___ + __ twelfths ​ 3km + __km 3 ___ + 5 ___ ​

2

11

4

7

7

8

8

9

+

+

+

+

+

3

11

LO: To add and subtract fractions - same denominators

Copy and complete the following operations

[pay attention to the units]

 Units (context) Fractions (words) Fractions (numbers) 2cm + 3cm 2 sevenths + 3 sevenths ​ 4L + 5L __ eighths + 2 ____ ​ 6m + 4__ 6 quarters + __ quarters ​ 5__ + 6kg 5 ___ + __ twelfths ​ 3km + __km 3 ___ + 5 ___ ​

2

11

4

7

7

8

8

9

+

+

+

+

+

3

11

Keywords

Like

Equivalent

Proper

Improper

Numerator

Denominator

LO: To add and subtract fractions - same denominators

Copy and complete the following operations

[pay attention to the units]

 Units Fractions (words) Fractions (numbers) 2cm + 3cm 2 sevenths + 3 sevenths ​ 4L + 5L 4 eighths + 5 eighths ​ 6m + 2m 6 quarters + 2 quarters ​ 5kg + 6kg 5 twelfths + 6 twelfths ​ 3km + 5km 3 ninths + 5 ninths ​

2

11

2

7

5

7

2

8

6

8

3

9

5

9

+

+

+

+

+

3

11

5

12

6

12

Keywords

Like

Equivalent

Proper

Improper

Numerator

Denominator

LO: To add and subtract fractions - same denominators

Are the following operations true or false? Why?

+

2

7

=

3

7

5

14

+

2

7

=

3

7

5

7

+

2

7

=

3

7

6

49

1

3

2

Keywords

Like

Equivalent

Proper

Improper

Numerator

Denominator

May be use whiteboards to get an idea of how many have the misconception of adding numerators and denominators

LO: To add and subtract fractions - same denominators

=

+

Keywords

Like

Equivalent

Proper

Improper

+

2

7

=

3

7

5

7

Numerator

Denominator

LO: To add and subtract fractions - same denominators

Complete the worksheet

Keywords

Like

Equivalent

Proper

Improper

Numerator

Denominator

PEER Marking: [ your name ]

Tick the correct answers ( âœ” )

Cross the incorrect answers ( Ï‡ )

PM

• You have done â€¦... very well
• On the other hand â€¦.. wasnâ€™t as good
• You could improve if you ...

Critique:

BE FAIR!

Keywords

Like

Equivalent

Proper

Improper

• Tell students to pass their work to the person next to them in the same table
• Remind students to treat their peers work with care. No doodling, no scribbling, no silly comments
• Be fair when scoring the effort of their colleagues

LO: To add and subtract fractions - same denominators

What happens when we take away?

-

2

7

=

3

7

=

-

Keywords

Numerator

Denominator

Like

Equivalent

Proper

Improper

Numerator

Denominator

LO: To add and subtract fractions - same denominators

What happens when we take away?

-

2

7

=

3

7

1

7

=

-

Keywords

Numerator

Denominator

Like

Equivalent

Proper

Improper

Numerator

Denominator

LO: To add and subtract fractions - same denominators

Complete the worksheet

Keywords

Like

Equivalent

Proper

Improper

Numerator

Denominator