Addition is the combining of quantities; it uses the following terms: addend --> 423 + addend -->246= 669 --> sum.
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Provide practice in the use and selection of strategies. Encourage students to develop efficient strategies.
Students should have exposure to a variety of problem types related to addition and subtraction. Examples are represented in the chart below. It is important to note that Join Problems (with start unknown), Separate Problems (with start unknown), Compare Problems (with larger unknown – using “fewer”) and Compare problems (with smaller unknown – using “more”) are the most difficult and should be mastered in grade two. [Graphic cannot be reproduced.]
Manipulatives should be used to develop an understanding of addition and subtraction facts.
The least number of steps necessary to solve a single-step problem is one.
Apply strategies, including place value and the properties of addition to determine the sum or difference of two whole numbers, each 999,999 or less. (b)