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The Place value Chart above is aligned, either partially or wholly, with the standard 1NBT02 from the Common Core Standards For Mathematics (see the shortened extract below). The resources below are similarly aligned.
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
- 10 can be thought of as a bundle of ten ones – called a “ten.”
- The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
- The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
Place Value Charts
- Place Value Worksheet Generator (hundreds, tens, and ones)
- Preparing To Subtract – Regrouping Ten (e.g. 58 as 5 tens and 8 ones or 4 tens and 18 ones)
- Ones & Tens in a Number Frame
Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Understand place value
- Comparing Numbers: Greater Than & Less Than (From Example/Guidance)