5.OA.2

Today’s Objective:1. Write simple expressions that record calculations with numbers. 2. Interpret numerical expressions without evaluating them.

I can write simple expressions that record calculations

with numbers.I know that expressions are a series of numbers andsymbols.

We have to be able to “translate” words into expressions

What words indicate a particular operation? Table Talk with your group! Timer

AddSubtract Sum

PlusMore than

Increase(d) byGreater than

Total

MinusTake awayDifference

Reduce(d) byDecrease(d) by

Less thanFewer (than)

We have to be able to “translate” words into expressions

What words indicate a particular operation? Table Talk with your group! Timer

Multiply Divide Times

ProductMultiplied by

OfTwice (×2), double (×2), triple (×3), etc.

Half (×½), Third (×⅓), Quarter (×¼)Square (times itself 2 times)

Divided byQuotient

One-half (÷2), Third (÷3), Quarter (÷4)

PerQuotient

Learn Zillion VideoVideo

Objective/Goal: Learn how to write a numerical expression to represent a numerical situation (phrase) by using a visual model.

Which of the following is the same as adding 8 and 7 and then multiply by 3

A. 3 x (8 + 7)B. 8 + 7 x3C. 29D. 48

Answer: A

3 x (8 + 7)

Which of the following is the same as subtracting 15 from 30, and then dividing by 3?

A. 15 – 30 ÷ 3B. (30-15) ÷ 3C. (15 – 30) ÷ 3D. 3 ÷ (30- 15)

Answer B (30-15) ÷ 3

Without calculating the expression, describe how 5 (10 x 10) relates to 10 x 10.

AnswerThe expression 5 (10 x 10) is 5 times larger than the expression 10 x 10 since I know that 5 (10 x 10 ) means that I have 5 groups of (10 x 10).

Brain Challenge!!!!!!!Without calculating the expression, describe how 0.5 x (300 ÷ 15) relates to (300÷15).

Before you begin, brainstorm what 0.5 could be equivalent to???????

Answer0.5 x ( 300 ÷ 15) is One-half of ( 300 ÷ 15) .

5.OA.2

1. Write simple expressions that record calculations with numbers. 2. Interpret numerical expressions without evaluating them.

I can write simple expressions that record calculations

with numbers.I know that expressions are a series of numbers andsymbols.

Independent Work Directions1. Math Task Cards/Check your answers using

the QR code at the bottom. If you got an answer wrong, go back and try the problem again. We will discuss your work at the beginning of tomorrow’s lesson.

2. Complete Page 12 Practice Page3. Work on IXL: Q1