Student Edition - Mathematics in Context - Britannica

AProduce PricingThere are many ways to estimate or find the cost of produce.You may use number tools such as a double number line, a ratiotable, or a calculator.For example, there are several strategies to find the cost of 1.8 kgof Golden Delicious apples priced at $1.60 per kilogram.• Estimate by rounding decimals to whole numbers.You might reason like this.1.8 is almost 2, so1.8 $1.60 is a littleless than 2 $1.60.2 $1.60 $1.60 $1.60 $1.50 $0.10 $1.50 $0.10 $1.50 $1.50 $0.10 $0.10 $3.20$3.20 is a high estimate.• Estimate by using simple fractions like halves or quarters.You might reason like this.1.8 $1.60 is a little morethan 1.75 $1.60, which isthe same as 1 3 4 of $1.60.0 $0.40 $0.80 $1.20 $1.60 $2.8001 4 kg1 2 kg3 4 kg 1 1 3 4kg$2.80 is a low estimate.8 More or Less