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Primary 4 | Maths
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Help. It’s confusing.
Date Posted: 4 years ago
Views: 349
a)
One packet of 2 notebooks cost $3.
6 notebooks is 3 times of that.
(because 6 ÷ 2 = 3 or 2 x 3 = 6)
So 3 packets of notebooks make up 6 notebooks.
Cost of 3 packets = $3 x 3 = $9
One packet of 3 pens cost $4.
6 pens is 2 times of that.
(Because 6 ÷ 3 = 2 or 3 x 2 = 6)
So 2 packets of pens make up 6 pens.
Cost of 2 packets = $4 x 2 = $8
$9 - $8 = $1
6 notebooks cost $1 more than 6 pens
b)
If 6 notebooks cost $1 more than 6 pens, then 3 sets of 6 notebooks cost $3 more than 3 sets of 6 pens.
(Because $3 ÷ $1 = 3 or $1 x 3 = $3)
So number of notebooks
= 3 x 6
= 18
One packet of 2 notebooks cost $3.
6 notebooks is 3 times of that.
(because 6 ÷ 2 = 3 or 2 x 3 = 6)
So 3 packets of notebooks make up 6 notebooks.
Cost of 3 packets = $3 x 3 = $9
One packet of 3 pens cost $4.
6 pens is 2 times of that.
(Because 6 ÷ 3 = 2 or 3 x 2 = 6)
So 2 packets of pens make up 6 pens.
Cost of 2 packets = $4 x 2 = $8
$9 - $8 = $1
6 notebooks cost $1 more than 6 pens
b)
If 6 notebooks cost $1 more than 6 pens, then 3 sets of 6 notebooks cost $3 more than 3 sets of 6 pens.
(Because $3 ÷ $1 = 3 or $1 x 3 = $3)
So number of notebooks
= 3 x 6
= 18
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Hope that this will help you:)
Date Posted:
4 years ago
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