**Mathematics: Grade 3: Number & Operations in Base Ten**

## Use place value understanding and properties of operations to perform multi-digit arithmetic. (A range of algorithms may be used)

3.NBT.1. Use place value understanding to round whole numbers to the nearest 10 or 100.

**Rounding Rap**

Find the place value and

Circle that digit.

Move to the right

And underline, get it?

Zero to four

Circle stays the same,

Five to nine

Add one is the game.

Now, flex your muscles

Like a hero,

Digits to the right

Change to zero.

All the other digits

Remain the same.

Yo! You're a winner

In the rounding game!

Click here for an explanation of rounding to the nearest 10

Click here for an explanation of rounding to the nearest 100

Click here for an explanation of rounding to the nearest 1000

Click here for an explanation of rounding to the nearest 100

Click here for an explanation of rounding to the nearest 1000

3.NBT.2. Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

3.NBT.3. Multiply one-digit whole numbers by multiples of 10 in the range 10–90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.