Answer

This is best solved by using multiplication.
Another Hint

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$123 - $162 = answer
Answer

This problem is best set out like this: 36 4 = answer
Answer

Use multiplication.
Another hint

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$364 $7 = answer
Answer

23 x 9 = answer
Answer

This problem can be set out like this: 15 + 40 = answer
Answer

Use subtraction.
Another hint

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To find out one quarter (1/4) of a number, you divide that number by 4.
For this problem, one (1) batch of biscuits = 20 biscuits.
Another Hint

Answer

34 x $7 = answer
Answer

One quarter (1/4) of 20 = 5, so after Tala ate a quarter of the first batch, there were 15 biscuits left.
Another hint

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Tala baked another 2 batches of biscuits. This is a total of another 40 biscuits which must be added to the number of biscuits left over from the first batch (15 biscuits).
Another hint

Answer