Swedish Rounding
Round whole numbers to the nearest 10, 100, or 1000.
Round whole numbers and decimals, with up to two places, to the nearest whole number, or tenth.
Number Framework Stages 6 and 7
Mary’s bill at the supermarket is $102.88. How much does she pay in cash?” Discuss why Swedish rounding is needed. (There are no 1- , 2- or 5-cent coins any more.) Get the students to fill in a number line with 102.80 at one end and 102.90 at the other. Discuss why these are the choices. Fill in the other boxes with 102.81, 102.82, 102.83, 102.84, 102.85, 102.86, 102.87, 102.88, and 102.89. Mark 102.88 with an arrow. Discuss why 102.88 is closer to 102.90. So $102.88 is rounded to $102.90.
Repeat rounding with the following amounts. Encourage the students to imagine the answer so that eventually they can do such problems without using the number lines on their sheet:
$345.09, $8.53, $5.61, $75.15, $0.36, $149.99, $65.08, $99.99 ...
Similar Resources
Sensible Rounding
Round whole numbers and decimals, with up to two places, to the nearest whole number, or tenth.
Use rounding to check the answers to multiplication and division problems.
Rounding Decimals
Round whole numbers and decimals, with up to two places, to the nearest whole number, or tenth.
Checking Multiplication by Estimation
Round whole numbers and decimals, with up to two places, to the nearest whole number, or tenth.
Use rounding to check the answers to multiplication and division problems.
Whole Number Rounding
Identify and order decimals to three places.
Round whole numbers and decimals, with up to two places, to the nearest whole number, or tenth.
