Rounding/Addition/Subtraction(:

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting a number to the nearest specified place value, such as the nearest ten or hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round a number to the nearest ten?

Back

Look at the digit in the ones place. If it is 5 or more, round up. If it is 4 or less, round down.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the mathematical operation of taking one number away from another.

Front

If you have 492 bottles and want to collect 600, how do you find out how many more you need?

Back

Subtract 492 from 600. 600 - 492 = 108.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Round 459 to the nearest ten.

Back

460.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you add rounded numbers?

Back

First, round each number to the nearest ten, then add the rounded numbers together.

Front

What is the total of 134, 88, and 74 when rounded to the nearest ten?

Back

Round each number: 130 + 90 + 70 = 290.

Front

If Tiny the elephant ate 152 pounds on Saturday and 12 more on Sunday, how do you find the total?

Back

Add 152 and 164 (152 + 12 = 164). Total: 152 + 164 = 316.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you find out how many baseballs were sold if there were 150 and 81 left?

Back

Subtract the number left from the total: 150 - 81 = 69.

Tags

CCSS.2.OA.A.1