Addition & Subtraction in Words
Applying the basic operations of addition and subtraction on numbers, with problems expressed in words.
Mapped to CCSS Section# 2.NBT.A.2, 2.NBT.B.7
Count within 1000; skip-count by 5s, 10s, and 100s.,Add and subtract within 1000, 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. Understand that in adding or subtracting three- digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
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