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LC: To solve word problems in length using + or -.

 

 

What do you know?

 

1m                                 1m = 100cm

89cm

Total means +

 

100 + 89 = 189cm laugh

 

What do you know?

 

3m                                 3m = 300cm

64cm 

How much did he use?   That must be -

 

300 - 64 = 236cm   laugh

 

 

What do you know?

 

Lulu 1m 38 cm          or     138cm

Holly is 109cm          or 1m  9cm

 

Lulu is taller    laugh

If the above work is a little tricky, do the work below.
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