# 1st Grade Common Core: 1.NBT.2c

Common Core Identifier: 1.NBT.2c / Grade: 1
Curriculum: Number And Operations In Base Ten: Understand Place Value.
Detail: 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).
7 Common Core State Standards (CCSS) aligned worksheets found:
Tell how many tens and ones are shown. Then write the number.
Tell how many tens and ones are in each number.
Roll two dice and make a 2-digit number. Then write the number in expanded form. After that, draw a sketch of place value blocks that make the number.
Write the 2-digit number represented by each set of place value blocks.
In this set, kids will practice skip counting by 100s, solving word problems, dividing shapes in half, reading a line plot, and telling time (half hour increments) on an analog clock.
Match the number box on the bottom of the page to the correct tens and ones blocks.
Cut out the number boxes and paste them next to the correct place value blocks.
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