Place value and rounding practice
Place value is knowing what each digit is worth, and rounding uses it to simplify numbers. Noggli practises both, from three-digit numbers up to millions and decimals.
What your child practises
- Year 3recognise the value of each digit in a three-digit number
- Year 4round any number to the nearest 10 or 100
- Year 5read place value to a million and round to the nearest 1,000
- Year 5round decimals to the nearest whole number or one decimal place
- Year 6round any whole number to a required degree of accuracy
Mix-ups Noggli looks out for
- Gives the digit itself, not what it is worth in its column
- Rounds the wrong way
What each digit is worth
In 85,279 the 2 is worth 200, because it is in the hundreds column. Saying the value, not the digit, is the skill. Noggli asks what a digit is worth so this becomes automatic.
Rounding numbers
Look at the digit to the right of the place you are rounding to. If it is 5 or more, round up; if it is 4 or less, round down. 369 to the nearest 10 is 370. 5.16 to one decimal place is 5.2.
Helping at home
- Use a place value chart and move digits along it when multiplying by 10.
- Round prices in the shop to estimate the total.
- For rounding, find the two numbers it sits between first, then decide which is nearer.
Made for children who worry about getting it wrong
A clue, not a cross
A wrong answer gets a clue and another go. A second miss shows how it works, step by step.
No clock
Nothing counts down. Confidence first, speed follows on its own.
The right level
After a few questions Noggli knows where your child is, and every question after that adapts.
Related practice
Questions parents ask
How do you round to the nearest 10?
Look at the ones digit. If it is 5 or more, round up to the next ten; if it is 4 or less, round down. 365 rounds to 370 and 364 rounds to 360.
What is place value?
The value a digit has because of its position. In 489, the 4 is worth 400, the 8 is worth 80 and the 9 is worth 9.
When do children learn rounding?
Rounding to the nearest 10 and 100 is Year 4. Rounding to 1,000 and rounding decimals is Year 5, and rounding to any degree of accuracy is Year 6.
Practise this every day, at the right level
Noggli works out where your child is in every topic and adjusts each question to suit. Free, with no timers, no scores and no child accounts.