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1st Grade Common Core Addition and Subtraction using number bond

1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
1st Grade Common Core Addition and Subtraction using number bond
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Common Core Standards
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967 KB|10 pages
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This free download is an excerpt from our Addition and Subtraction (numbers 0 to 100) worksheet set, covering Common Core Standards 1.OA and 1.NBT.

The Common Core encourages learners to explore multiple ways to solve a common problem and find strategies that fit their learning style. To promote deeper learning, this worksheet set uses a variety of addition and subtraction strategies commonly found in Singapore Math, including number bond, place value chart, break-apart and standard algorithm. Through these exercises, students acquire conceptual knowledge (why the rules work), in addition to procedural knowledge (what are the rules). Teachers and parents, who are familiar with the student’s learning style, can choose the appropriate activities for both conceptual and procedural learning.

Total pages: 10

The Common Core Standards covered by our Addition and Subtraction (numbers to 100) include:

Number and Operations in Base Ten (1.NBT)

Extend the counting sequence
A1: Count to 120, read and write numerals and represent a number of objects with a written numeral. (count to 20 in this worksheet)

Understand place value.
B2: 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).
C3: Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.

Use place value understanding and properties of operations to add
and subtract.
D4: Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
D5: Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
D6: Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Total Pages
10 pages
Answer Key
Not Included
Teaching Duration
2 hours
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