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Tens and ones
How many tens and ones make a number, what each digit is worth, splitting 74 into 60 and 14, and numbers in words.
Choose what to practise
Each round is 10 questions, and takes 5 to 10 minutes.
Finished
How many tens and ones make a number, what each digit is worth, splitting 74 into 60 and 14, and numbers in words.
Choose what to practise
Each round is 10 questions, and takes 5 to 10 minutes.
Finished
In Year 2, children recognise the place value of each digit in a two-digit number, and read and write numbers to at least 100 in numerals and in words. They also learn that a number can be split in more than one way. For example, 56 is 50 + 6 and also 40 + 16.
Make the number with objects. Bundle ten sticks, straws or pasta pieces to make each ten, and keep single ones beside them. With 4 bundles and 3 single ones, the number is 43, so the 4 is worth 40 and the 3 is worth 3.
Splitting 74 another way. Exchange one ten for ten ones, because one ten has the same value as ten ones. The 7 tens and 4 ones become 6 tens and 14 ones, so 74 is also 60 + 14.
Watch out for reading the digit on its own. Asked what the 7 in 74 is worth, some children say 7. Ask what the 7 represents. It stands for 7 tens, or 70, not just 7.
Once tens and ones are secure, go on to Numbers to 1000, a Stretch game that adds the hundreds column.
In Year 3, children recognise the place value of each digit in a three-digit number, and learn column methods for adding and subtracting. In column subtraction, children exchange one ten for ten ones when there are not enough ones to take away. In 74 − 38, for example, 4 ones is fewer than 8 ones, so 74 becomes 6 tens and 14 ones.
The next game on the Place Value path is The number line to 100.