Miss Johnston cut out rectangles from one centimetre squared paper.
She then counted how many squares the shapes took up. After this she tore a piece out of some of their shapes to make a puzzle for you to solve.
Can you work out how many squares there were in these shapes before the bit was torn out?
(The orange, blue, green and yellow shapes were rectangles. The bottom two shapes, which are pale orange and purple, were each two rectangles joined together.)
I think the pale green shape is 15cm2. I know this because I used my 3x tables.
ReplyDeletegreen is 15cm2
ReplyDeleteblue is 32cm2
yellow is 30cm2
orange is 15cm2
purple is 18cm2
pale orange is 21cm2
The pale orange shape is 15cm2 I know because I used my 5x tables to make it easier for me instead of counting in 1s. The pale blue is 36cm2 because I used my 6x table. The purple shape is 18cm because I used my 3x tables to make it easier instead of hardier. bye its really fun learning with you.
ReplyDeleteHow clever of you to use your multiplication facts to work out area. I wonder if anyone else will use a similar method?
DeleteThe answer to the pale orange one is 21.
ReplyDeleteRemember this shape is made up of 2 rectangles...
DeleteI think the pale green one is 15 cm2 because I
ReplyDeleteused my 3x tablels
The answer to the purple one is 18. Because there are 2 squares of 9. This adds together to make 18.
ReplyDelete18...remember what we have to put next to the number to show that it is area?
Deletethe pale green one is 15cm because i was using my 3x times tables
ReplyDeleteThe green one is 15cm2 because I was using my 5x tables. The purple one is18cm2 I used my 3x tables. The pale orange is 21cm2 I used my 2xtables and my 3x tables.
ReplyDeleteorange 15cm
ReplyDeleteblue 32cm
green 15cm
yellow 30cm
pale orange 21cm
purple 18cm
orange 15 cm
ReplyDeleteblue 32 cm
green 15 cm
yellow 30 cm
purple 18 cm
pale orange 21 cm