Math topic · United States
Place value
Ones, tens, hundreds and beyond: reading, writing, comparing and rounding whole numbers.
Online practice
- Tens and ones Grade 1
- Make a number from tens and ones Grade 1
- Teen numbers as ten and ones Grade 1
- Ten more and ten less Grade 1
- Compare two-digit numbers Grade 1
- Hundreds, tens and ones Grade 2
- Make a number from hundreds, tens and ones Grade 2
- Value of a digit Grade 2
- Write numbers in expanded form Grade 2
- Write numbers from expanded form Grade 2
- Compare three-digit numbers Grade 2
- Mentally add 10 or subtract 10 Grade 2
- Mentally add 100 or subtract 100 Grade 2
- Round to the nearest ten Grade 4
- Round to the nearest hundred Grade 4
- Round to the nearest thousand: up to six digits Grade 4
- Round to the nearest ten thousand Grade 4
- Round four-digit numbers to the nearest thousand Grade 4
- Value of a digit in a decimal Grade 4
- Value of a digit in a decimal Grade 5
- Round decimals to the nearest whole number Grade 5
- Round decimals to the nearest tenth or hundredth Grade 5
Free tools
Place Value Blocks
Build any number from ones, tens, hundreds and thousands blocks, trade ten for one, and see it written in standard, expanded and word form.
Ten Frames
Fill ten frames with counters to show numbers to 20, make ten and practise quick looks. Early number sense for kindergarten to grade 2.
Hundred Chart
An interactive 100 or 120 chart. Shade skip-counting patterns, hide numbers for a missing-number puzzle, and jump by tens and ones.