Grade 1 - Addition And Subtraction Within 20

total lessons: 17

Nº	Activity title	type
	Relating Counting To Addition And Subtraction
1	Adding by Counting On	Learn Assisted practice Benchmark practice
2	Skip-Counting by 2 to Add 2	Learn Assisted practice Benchmark practice
3	Subtracting by Counting Backward	Learn Assisted practice Benchmark practice
	Adding Within 20
4	Adding Two 1-Digit Numbers by Making 10	Learn Assisted practice Benchmark practice
5	Adding Two 1-Digit Numbers Using Doubles Facts	Learn Assisted practice Benchmark practice
6	Adding Two 1-Digit Numbers Using Doubles Plus One Facts	Learn Assisted practice Benchmark practice
7	Adding Ones to 2-Digit Numbers by Grouping into 10 and Ones	Learn Assisted practice Benchmark practice
8	Adding Within 20: Games	Math Soccer
	Subtracting Within 20
9	Subtracting 1-Digit Numbers from 2-Digit Numbers by Grouping into 10 and Ones, Then Subtracting the Ones	Learn Assisted practice Benchmark practice
10	Subtracting 1-Digit Numbers from 2-Digit Numbers by Grouping into 10 and Ones, Then Subtract from the 10	Learn Assisted practice Benchmark practice
11	Subtracting Within 20: Games	Math Soccer
	Word Problems Addition And Subtraction
12	Solving Subtraction Problems Using Doubles Facts of Addition	Learn Assisted practice Benchmark practice
13	Solving One-Step Word Problems Involving Addition	Learn Assisted practice Benchmark practice
14	Solving One-Step Word Problems Involving Subtraction	Learn Assisted practice Benchmark practice
	Adding Three Numbers
15	Adding Three 1-Digit Numbers Within 20	Learn Assisted practice Benchmark practice
16	Solving Word Problems Involving Addition of Three Numbers	Learn Assisted practice Benchmark practice
17	Solving Word Problems Involving Addition of Three 1-Digit Numbers Within 20	Learn Assisted practice Benchmark practice

Grade 1 - Addition And Subtraction Within 20

Relating Counting To Addition And Subtraction

Adding Within 20

Subtracting Within 20

Word Problems Addition And Subtraction

Adding Three Numbers