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➗ 数学 › 加法与减法
52 topics
➗ 数学 4–6y
Numbers up to 10 into pairs
Addition & Subtraction
Conceptual
➗ 数学 4–6y
Number bonds to 9
Addition & Subtraction
Procedural
➗ 数学 4–6y
Subtraction as taking away or separating
Addition & Subtraction
Conceptual
➗ 数学 4–6y
Addition and subtraction word problems
Addition & Subtraction
Procedural
➗ 数学 4–6y
Representing Addition and Subtraction
Addition & Subtraction
Representational
➗ 数学 4–6y
Addition as combining or putting together two
Addition & Subtraction
Conceptual
➗ 数学 5–6y
Fluent adding and subtracting within 5
Addition & Subtraction
Procedural
➗ 数学 5–7y
Early Word Problems
Addition & Subtraction
Procedural
➗ 数学 5–6y
Adding and subtracting
Addition & Subtraction
Procedural
➗ 数学 5–6y
Number bonds
Addition & Subtraction
Procedural
➗ 数学 5–6y
Reading +, −, and = symbols
Addition & Subtraction
Language
➗ 数学 6–7y
Adding within 100
Addition & Subtraction
Procedural
➗ 数学 6–7y
Fluent adding and subtracting within 10
Addition & Subtraction
Procedural
➗ 数学 6–7y
Addition and subtraction within 20
Addition & Subtraction
Procedural
➗ 数学 6–7y
Adding Three Small Numbers
Addition & Subtraction
Procedural
➗ 数学 6–7y
Adding two two-digit numbers
Addition & Subtraction
Procedural
➗ 数学 6–7y
Grouping numbers to add
Addition & Subtraction
Conceptual
➗ 数学 6–7y
Unknown in Addition & Subtraction
Addition & Subtraction
Procedural
➗ 数学 6–7y
Fluent addition and subtraction
Addition & Subtraction
Procedural
➗ 数学 6–7y
Addition and subtraction strategies
Addition & Subtraction
Procedural
➗ 数学 6–7y
Finding a missing number in addition
Addition & Subtraction
Conceptual
➗ 数学 6–7y
Addition in any order
Addition & Subtraction
Conceptual
➗ 数学 6–7y
Mental and written addition and subtraction
Addition & Subtraction
Procedural
➗ 数学 6–7y
Mental addition and subtraction (age 6+)
Addition & Subtraction
Procedural
➗ 数学 6–7y
Subtracting multiples of 10
Addition & Subtraction
Procedural
➗ 数学 6–7y
Adding and subtracting tens mentally
Addition & Subtraction
Procedural
➗ 数学 6–7y
What the equals sign means
Addition & Subtraction
Conceptual
➗ 数学 6–7y
Inverse: addition undoes subtraction
Addition & Subtraction
Conceptual
➗ 数学 7–8y
Addition and subtraction within 1000
Addition & Subtraction
Procedural
➗ 数学 7–8y
Fluent adding and subtracting within 100
Addition & Subtraction
Procedural
➗ 数学 7–8y
Fluent adding and subtracting within 20
Addition & Subtraction
Procedural
➗ 数学 7–8y
Two-Step Word Problems
Addition & Subtraction
Procedural
➗ 数学 7–8y
Addition and subtraction strategies (age 7+)
Addition & Subtraction
Meta
➗ 数学 7–8y
Adding and subtracting (age 7+)
Addition & Subtraction
Procedural
➗ 数学 7–9y
Estimating by rounding
Addition & Subtraction
Meta
➗ 数学 7–8y
Mentally adding tens to 3-digit numbers
Addition & Subtraction
Procedural
➗ 数学 7–8y
Mentally adding hundreds to 3-digit numbers
Addition & Subtraction
Procedural
➗ 数学 7–8y
Mental addition and subtraction (age 7+)
Addition & Subtraction
Procedural
➗ 数学 7–8y
Adding numbers
Addition & Subtraction
Procedural
➗ 数学 7–8y
Numbers on a number line
Addition & Subtraction
Representational
➗ 数学 7–8y
Missing number problems (age 7+)
Addition & Subtraction
Procedural
➗ 数学 8–9y
Fluent adding and subtracting within 1000
Addition & Subtraction
Procedural
➗ 数学 8–9y
Two-step addition and subtraction problems
Addition & Subtraction
Procedural
➗ 数学 8–9y
Two-Step Equations
Addition & Subtraction
Procedural
➗ 数学 8–9y
Adding and subtracting (age 8+)
Addition & Subtraction
Procedural
➗ 数学 9–10y
Fluent addition and subtraction (age 9+)
Addition & Subtraction
Procedural
➗ 数学 9–10y
Adding and subtracting (age 9+)
Addition & Subtraction
Procedural
➗ 数学 9–10y
Mental addition and subtraction (age 9+)
Addition & Subtraction
Procedural
➗ 数学 9–10y
Checking Answers by Rounding
Addition & Subtraction
Meta
➗ 数学 10–11y
Addition and subtraction strategies (age 10+)
Addition & Subtraction
Procedural
➗ 数学 10–11y
Adding and subtracting (age 10+)
Addition & Subtraction
Procedural
➗ 数学 11–13y
Positive and Negative Numbers
Addition & Subtraction
Representational