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1nbt2c Worksheets

Number and Operations in Base Ten Understand place value. 2Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: cThe 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).

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1nbt2c

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Writing With Tens and Ones

1nbt2c

Write a two-digit number when you are told how many tens and how many ones it has.
Break a number into tens and ones to show what each digit means.

1nbt2c Worksheets - Counting Groups of Ten worksheet

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Counting Groups of Ten

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Count how many tens are shown by looking at groups of 10 blocks.
Use skip-counting by 10s to find the total number of blocks.
Tell the difference between the number of tens and the total number of ones.

1nbt2c Worksheets - Place value blocks (10s and 1s) worksheet

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Place value blocks (10s and 1s)

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Read base-ten blocks and tell what number they show using tens and ones.
Count tens and ones separately and combine them to make the total value.
Match a block model to the correct written number (like 34) and say how many tens and ones it has.
Explain the value of a number by describing it as tens and ones (like 34 is 3 tens and 4 ones).

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