1st Grade Common Core: 1.NBT.2
Common Core Identifier: 1.NBT.2 / Grade: 1
Curriculum: Number And Operations In Base Ten: Understand Place Value.
Detail: Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
a. 10 can be thought of as a bundle of ten ones - called a "ten."
b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
c. 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).
40 Common Core State Standards (CCSS) aligned worksheets found:
a. 10 can be thought of as a bundle of ten ones - called a "ten."
b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
c. 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).
This is a class set of printable puzzle pieces to practice place value. Students will match tens and ones place value blocks with the correct number.
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On this worksheet, students will use the number sentence to draw the counters in the ten-frame and find the sum.
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Use scissors to cut out the ten-frame boxes on the bottom of the worksheet and glue them to the matching number sentence above.
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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.
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For the tenth week of M.B., students will order objects by length (shortest to longest), identify solid shapes (cubes, cones, spheres), complete a pictograph, and answer place value questions.
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The special number on this worksheet is 30. Draw 30 tally marks. Circle the base-10 block set that represents 30. Tell how many 10s and how many 1s.
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This printable has 15 pennants that can be cut out and colored. Then solve the ten-frame addition fact. Lastly, these pennants can be strung up on a rope or string to hang in the classroom.
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Your students will review place value, identify the number of tens and ones in a 2-digit number. Add zero to single-digit numbers. Identify a polygons, including hexagons. Count up from 2-digit numbers.
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Show students how to write a two-digit number in ways other than standard form. The page shows an example of a number in written form, expanded form, and expanded notation.
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Print out this puzzle to practice basic subtraction. Minuends and subtrahends up to 9.
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Cut out the number boxes and paste them next to the correct place value blocks.
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The special number for this page is 26. Students must trace and write the number on the primary-ruled lines. Color in 26 circles. Tell how many 10s and how many 1s are in 26. And complete the number line by telling what comes before and after 26.
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The first part of this worksheet has students using the counters in the ten-frame to find the number sentence. The second part uses the number sentence to fill in the ten-frame.
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This week you students will decompose 2-digit numbers into 1s and 10s, draw a model to solve an addition problem, determine the number of straight sides on polygons, and continue shapes in a pattern.
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Students can practice their basic addition facts with this printable puzzle game.
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Match the number box on the bottom of the page to the correct tens and ones blocks.
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This printable uses ten-frames to help students find the right number sentence and use their addition skills to determine the sum of each math fact.
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This mini-book is a fun way for students to practice with ten-frames and addition skills. Cut out the pages and assemble, then fill out the ten-frames and solve the math fact.
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This file has 5 worksheets, one for each day of the week. Skills include basic addition, place value with base-10 blocks, measurement with non-standard units, and solving word problems.
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This worksheet has ten-frames with red and white counters all adding up to ten. Students will find the missing number to complete the math fact.
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Make the number 18 on the double ten frame. Complete the number line. Tell how many 10s and 1s. Circle the correct set of place value blocks for 18.
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Read each word problem to fill out the ten-frame, write out the math fact, and find them sum.
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Tell how many tens and ones are shown. Then write the number.
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Review basic addition and subtraction facts. Practice breaking a 2-digit number up into tens and ones. Compare numbers, using the phrases less than and greater than. Answer a question using a pictograph.
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Practice elementary math concepts such as skip counting, simple addition, place value with tens and ones, and more.
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Print out these puzzle pieces to practice basic subtraction.
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State the two-digit number that is displayed on each abacus picture.
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Draw the correct number of counters in each set of double frames.
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This whole-class "I have, Who has" card game has pictures of place value blocks. Includes 30 cards, instructions, and an answer key.
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Use this double ten frame (20-frame) template for your manipulative math lessons.
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How many more counters are needed to make 20 in each group?
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Write two addition and two subtraction facts shown by each double ten frame.
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Write the 2-digit number represented by each set of place value blocks.
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Use place value blocks and this learning mat to explore 2-digit numbers.
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How many counters are in the frames? This worksheet features double 10-frames with numbers up to 20.
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Place base 10 blocks on the place value mat to learn about 3-digit numbers.
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For each picture, tell how many more counters are needed to make ten.
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