Mental Math Challenge

Front

What is the sum of 500 and 250?

Back

750

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you add milliliters (mL) in a measurement problem?

Back

You simply add the numerical values together. For example, 46 mL + 5 mL = 51 mL.

Tags

CCSS.4.MD.A.2

Front

What is 4 multiplied by 5?

Back

20

Tags

CCSS.3.OA.C.7

Front

If there are 20 students in a class and half leave, how many are left?

Back

10 students.

Tags

CCSS.3.OA.A.3

Front

What is the sum of 250 grams and 200 grams?

Back

450 grams.

Tags

CCSS.3.MD.A.2

Front

What is mental math?

Back

Mental math refers to performing calculations in your head without the use of calculators or paper.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is the principle of addition in mathematics?

Back

The principle of addition states that when you combine two or more numbers, the result is called the sum.

Tags

CCSS.1.OA.B.3

Front

How do you convert grams to kilograms?

Back

To convert grams to kilograms, divide the number of grams by 1000.

Tags

CCSS.4.MD.A.1

Front

What is the importance of estimation in mental math?

Back

Estimation helps to quickly assess the reasonableness of an answer without performing exact calculations.

Front

What is the associative property of addition?

Back

The associative property states that the way in which numbers are grouped in addition does not change the sum.

Tags

CCSS.1.OA.B.3