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Fion : 9u
Grace : 2u + 2u = 4u
Helen : 6u – 2u = 4u

9u – 4u = 5u ——- 665
1u ——- 665/5 = 133
9u – 2u = 7u ——- 133 x 7 = 931

Ans : 931 more beads.

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The child has done the correct 1st working by writing down the initial ratio. Next step is to understand the movement in terms of unit and write down. Then analyse information and last step is solving. Solving is almost never the first step.

                                F      :     G     :      H

At first                    9      :     2      :      6

H gives 1/3 to G   9      :    2+2  :    6-2

comparing F is 9 units, G is 4 units,

Now, F has 5 units more = 665 more beads

1 unit —-> 133 beads

At first, F has 7 units more than G—-> 931 more beads#

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