Day 2

Second Grade Mathematics

Learning Objective:
I can subtract from 200 using mental strategies and algorithms based on knowledge of place value and properties of operations.

Demonstration of Learning:
Given problems, I will subtract from 200 using mental strategies and algorithms based on knowledge of place value and properties of operations correctly on 3 out of 4 questions.

K.6(A) identify two‐dimensional shapes, including circles, triangles, rectangles, and squares as special rectangles

12

Vocabulary

Subtraction

New Groups Below

Totals Below

Algorithm

Taking one number or

amount away from

another.

Newly composed units
on the line below the

appropriate place in the

addition problem.

Newly composed total

on the line below to
show the total of the

addition problem

A step-by-step procedure

to solve a

particular type of

problem

5 cans take away 3 cans

3 1
- 1 8
1 3

2 11

3 5

+12
7
4 0
4 7

3 5

+1 2

4 7

13

20

READ: Jerry made 90 cupcakes. He sold some of them and had 26 cupcakes left. How many did he sell?

DRAW/Represent:

Teacher Note:

READ → Read
DRAW → Represent
WRITE → Solve

WRITE/Solve:

20

READ: Jerry made 100 pizzas. He sold some of them and had 37 pizzas left. How many did he sell?

DRAW/Represent:

Teacher Note:

READ → Read
DRAW → Represent
WRITE → Solve

WRITE/Solve:

22

​Solve this subtraction:

22

100

​Solve this subtraction:

24

hundreds

tens

ones

11

100

1

10

200

− 67

34

​DOL

34

​Problem Set

​Solve this subtraction: