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11 February, 09:34

Irene makes 4 2/3 cups of pancake batter. she splits the

batter into 2 bowls. she mixes blueberries into 2 1/4 cups of batter and walnuts into the rest of the batter

1. Estimate how much of the batter has walnuts in it. explain your estimate.

2. find the actual amount of batter that has walnuts in it. explain how you your answer is reasonable.

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  1. 11 February, 09:39
    0
    Step-by-step explanation:

    An estimate is usually a guess, but I somehow think that's not what you want.

    She starts with 4 2/3 cups of batter. When she divides it into two, one of the batters has 2 1/4 cups. That's the one she puts blueberries in.

    The other batter is the one you are interested in. How big is it?

    Estimate: One

    The estimated size would be 4 2/3 - 2 1/3 = 2 1/3 which is an estimate. It is just taking the closest number to use so you don't have to grab your calculator.

    Actual Size: Two

    4 2/3 - 2 1/4 is the size of the second batter. Since 2/3 is greater than 1/4 you need only subtract the whole numbers and then the fractions.

    Whole number subtraction: 4 - 2 = 2

    Fraction subtraction: 2/3 - 1/4

    Find the Lowest common multiple between 3 and 4: It is 12. 3 and 4 are prime to each other. They have nothing in common.

    2/3 to 12s: (2*4) / (3*4) = 8 / 12 1/4 to 12s: (1 * 3) / (4*3) = 3/12 8/12 - 3/12 = 5/12

    So the actual size of the batter containing the walnuts is 2 5/12
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