We first identify the total weight of chocolate chips required for the recipe, which is 3.75 kg, and the amount left after the mishap, which is 2.18 kg.

Barny needs 3.75 kilograms of chocolate chips for his recipe. After a mishap, only 2.18 kilograms are left. How many more kilograms of chocolate chips does Barny need to buy?

Answer: 1.57 kilograms

Step-by-step solution

Step 1: Identify given quantities

We first identify the total weight of chocolate chips required for the recipe, which is $3.75\text{ kg}$ , and the amount left after the mishap, which is $2.18\text{ kg}$ .

Step 2: Subtract the remaining amount from the total

To find how much more chocolate chips Barny needs to buy, we subtract the quantity left from the total quantity needed.

Step 3: Compute the difference

Subtracting column by column: in the hundredths place, we borrow from $7$ tenths to make $15$ hundredths, and $15 - 8 = 7$ . In the tenths place, $6 - 1 = 5$ . In the units place, $3 - 2 = 1$ . The difference is $1.57\text{ kg}$ .

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