1.NBT.A | ||
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Grade 1 » Number & Operations in Base Ten » Extend the counting sequence. |
1.NBT.A.1 | ||
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Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral. Grade levels |
1.NBT.B | ||
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Grade 1 » Number & Operations in Base Ten » Understand place value. |
1.NBT.B.2 | ||
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Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: Grade levels |
1.NBT.B.2a | ||
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10 can be thought of as a bundle of ten ones — called a "ten." Grade levels |
1.NBT.B.2b | ||
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The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. Grade levels |
1.NBT.B.2c | ||
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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). Grade levels |
1.NBT.B.3 | ||
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Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <. Grade levels |
1.NBT.C | ||
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Grade 1 » Number & Operations in Base Ten » Use place value understanding and properties of operations to add and subtract. |