L.O. To round decimal numbers (M2)
WISH 1 – I can identify decimal numbers on a number line.
WISH 2 - I can round whole and decimal numbers.
WISH 3 – I can investigate rounding decimal numbers.
FFM: Fluent in 4s PPT. Answer 8 arithmetic style questions in 5 minutes.
235.6 is smaller than 235.9, I know this because 9 tenths are bigger than 6 tenths.
Remember the rule for rounding is 5 or more we round up. 4 or less we round down.
23.8 rounded to the nearest whole number.
It can round to 23 or 24. 8 tenths is ‘5 or more’ so I round up. 23.8 rounded to the nearest whole number is 24.
45.87 rounded to the nearest tenth.
8 tenths can round to 8 or 9 tenths. 7 is more than 5 so I round up. 45.87 to the nearest tenth is 45.9
Main – Round the given numbers to whole, 1dp (tenths) and 2dp (hundredths) and Solve worded problems involving rounding decimal numbers.