6×10 + 3 = 63
- Six tens are 60; three ones are 3.
- Join 60 and 3 to read 63.
Learn
A digit has a place.
See how the same digit changes value when it moves between ones, tens and hundreds.
Work it out together
4×100 + 0×10 + 7 = 407
- Four hundreds are 400; zero tens add nothing.
- Seven ones stay in the ones place, so the number is 407.
Every place has a value
In 63, the 6 is worth 60 because it is in the tens place. The 3 is worth 3 because it is in the ones place. Reading each place separately keeps the digits in order.
A zero keeps an empty place visible
In 407, the zero says there are no tens. Without it, 47 would mean four tens and seven ones: a different number. Do not add the written digits by themselves. Six tens and three ones make 63, not 9.
Your turn
Choose the answer: 3×100 + 0×10 + 4 = ?