Math Games

Grade 2 - Number

Standard 2.N.7 - Make a specific number by regrouping tens and ones.

Included Skills:

Illustrate, concretely and pictorially, the meaning of place value for numbers to 100.
• Achievement Indicators:
- 2N7.1 Explain and show with counters the meaning of each digit for a given two-digit numeral with both digits the same; e.g., for the numeral 22, the first digit represents two tens (twenty counters) and the second digit represents two ones (two counters).
- 2N7.2 Count the number of objects in a given set, using groups of 10s and 1s, and record the result as a twodigit numeral under the headings 10s and 1s.
- 2N7.3 Describe a given two-digit numeral in at least two ways; e.g., 24 as two 10s and four 1s, twenty and four, two groups of ten and four left over, and twenty-four ones.
- 2N7.4 Illustrate, using ten-frames and diagrams, that a given numeral consists of a certain number of groups of ten and a certain number of ones.
- 2N7.5 Illustrate, using base ten materials, that a given numeral consists of a certain number of tens and a certain number of ones.
- 2N7.6 Explain why the value of a digit depends on its placement within a numeral.