Place value up to 10,000

Every digit in a number has a place value.

Take the number 4,736:

• 4 is in the thousands place: 4,000
• 7 is in the hundreds place: 700
• 3 is in the tens place: 30
• 6 is in the ones place: 6

So 4,736 = 4,000 + 700 + 30 + 6. This is called expanded form.

Reading and writing numbers in words

• 4,736: four thousand, seven hundred and thirty-six
• 9,050: nine thousand and fifty
• 10,000: ten thousand

Ordering numbers

Compare the thousands first, then hundreds, then tens, then ones.

• 5,912 and 5,921: the thousands and hundreds are equal; compare tens: 1 < 2, so 5,912 < 5,921.

Rounding off to the nearest ten

Look at the ones digit. If it is 5 or more, round up; if it is less than 5, round down.

• 347 rounds to 350
• 342 rounds to 340