Pls help me with this three questions as soon as possible! I need the correct an

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primary 5 | Maths | Decimals
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primary 5 Maths Decimals Singapore

Pls help me with this three questions as soon as possible! I need the correct ans.

Date Posted: 3 years ago

1) 6units*3=18units
18units+12units=30units
30units= $7.85*30= $235.50

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Date Posted: 3 years ago

2) 0.64m=64cm
1m=100cm
Mark-> 100cm-64cm=36cm
Length of square-> 64/4=16cm
Length of rectangle-> 36/3=12cm
Difference-> 16cm-12cm=4cm

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Date Posted: 3 years ago

3) 16units*3=48units
48units+24units=72units
14.4cm/72=0.2cm
0.2*24=4.8cm

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Date Posted: 3 years ago