b) 1 The hallway will be painted green. Green paint comes in cans of 1 3 litre. Sofia uses 10 cans. How much green paint does she use in total? Think together Sofia has 6 half litres of paint. Sofia has 3 litres of paint now. 1 l 1 3 l 1 3 l 1 3 l 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 10 3 = 3 Sofia uses litres of green paint in total. 1 l 1 2 l 1 2 l 1 l 1 2 l 1 2 l 1 l 1 2 l 1 2 l 1 1 1 1 2 + 1 2 + 1 2 + 1 2 + 1 2 + 1 2 + + 6 2 l = 3 l Example:
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b)b)
1 The hallway will be painted green. Green paint comes in cans of 13 litre.
Sofi a uses 10 cans. How much green paint does she use in total?
Think together
Sofi a has 6 half litres of paint.
Sofi a has 3 litres of paint now.
1 l
13l 1 3l
1
13l
13
13
13
13
13
13
13
13
13
13
1
103
= 3
Sofi a uses litres of green paint in total.
1 l
12l 1 2l
1
12 l1 l
12l 1 2l
1
12 l1 l
12l 1 2l
1
12 l
1 1 1
12 + 1
2 + 12 + 1
2 + 12 + 1
2
+ +
62 l = 3 l
Example:
3 Complete each set. What stays the same and what changes? Explain the patterns of answers.
a) 176
= b) 244
=
186
= 245
=
196
= 246
=
206
= 247
=
216
= 248
=
226
= 249
=
236
= 2410
=
2 Convert these improper fractions into mixed numbers.
a) 54
= b) 134
= c) 154 = d) 41
4 =
I wonder if some answers can be written in different ways.
I wonder if some answers can be written in different ways.
I think I can simplify some of the fractions.
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