7. Decimal operations

Consider $6.61+2.85$6.61+2.85

a

Estimate the answer by rounding both values to the nearest whole number.

b

Use a calculator to evaluate $6.61$6.61 + $2.85$2.85 and write the answer below.

c

What is the difference between the estimate and the actual answer?

Easy

Approx a minute

Consider $7.38\times8.12$7.38×8.12

Consider the product $1.29\times3.42$1.29×3.42

Consider $11.59\div4.44$11.59÷4.44

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Add and subtract decimals, with and without digital technologies, and use estimation and rounding to check the reasonableness of answers

Multiply decimals by whole numbers and perform divisions by non-zero whole numbers where the results are terminating decimals, with and without digital technologies