Page 2 - Kindergarten.indd

T a b l e o f C o n T e n T s

g R a D e 1

Common
Page
Lesson Core Objective Number
Standard

Use addition and subtraction within 20 to solve
word problems involving situations of adding to,
taking from, putting together, taking apart, and
Solving Word Problems 1.OA.1 comparing, with unknowns in all positions, e.g., by 4-11
using objects,
drawings, and equations with a symbol for the
unknown number to represent the problem.
Solve word problems that call for addition of three
Solving Word Problems whole numbers whose sum is less than or equal to
with Three Whole 1.OA.2 20, e.g., by using objects, drawings, and equations 12-19
Numbers with a symbol for the unknown number to represent
the problem.
Apply properties of operations as strategies to add
and subtract.3 Examples: If 8 + 3 = 11 is known, then
Properties of Addition 3 + 8 = 11 is also known. (Commutative property of
and Subtraction 1.OA.3 addition.) To add 2 + 6 + 4, the second two numbers 20-27
can be added to make a ten, so 2 + 6 + 4 = 2 + 10 =
12. (Associative property of addition.)
Understand subtraction as an unknown-addend
Strategies for 1.OA.4 problem. For example, subtract 10 – 8 by finding 28-35
Subtracting
the number that makes 10 when added to 8.
Addition and 1.OA.5 Relate counting to addition and subtraction (e.g., 36-43
Subtraction by counting on 2 to add 2).
Add and subtract within 20, demonstrating fluency
for addition and subtraction within 10. Use strategies
such as counting on; making ten (e.g., 8 + 6 = 8 + 2
+ 4 = 10 + 4 = 14); decomposing a number leading
Building Fluency to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using
for Addition and 1.OA.6 the relationship between addition and subtraction 44-51
Subtraction
(e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4);
and creating equivalent but easier or known sums
(e.g., adding 6 + 7 by creating the known equivalent
6 + 6 + 1 = 12 + 1 = 13).
Understand the meaning of the equal sign, and
determine if equations involving addition and
Equations Involving subtraction are true or false. For example, which
Addition and 1.OA.7 of the following equations are true and which are 52-59
Subtraction
false? 6 = 6, 7 = 8 – 1,
5 + 2 = 2 + 5, 4 + 1 = 5 + 2.

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