Math 1 - beginning of unit 3 - 3 digit mental math #1

What is a difference?

• A difference is the result of adding two numbers together.

• A difference is the result of multiplying two numbers.

• A difference is the result of subtracting one number from another.

• A difference is the result of dividing one number by another.

Tags

CCSS.3.OA.D.8

How do you add numbers?

• To add numbers, you combine their values to find the total.

• To add numbers, you subtract one number from another.

• To add numbers, you multiply their values together.

• To add numbers, you divide one number by another.

Tags

CCSS.5.NBT.B.7

What is a number sentence?

• A mathematical statement that shows a relationship between numbers using operations.

• A sentence that describes a number in words.

• A type of equation that only includes addition.

• A statement that compares two different numbers.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

What is a three-digit number?

• A number that has three places, such as 100, 245, or 999.

• A number that is less than 100.

• A number that has four places, such as 1000 or 2450.

• A number that is exactly 200.

Tags

CCSS.2.NBT.A.3

What does the equal sign (=) mean?

• It indicates that the values on both sides are the same.

• It shows that the values on the left are greater than the values on the right.

• It represents a mathematical operation that needs to be solved.

• It signifies that the values on the left are less than the values on the right.

What is regrouping in addition?

• Regrouping in addition is when you carry over a value to the next place value when the sum exceeds 10.

• Regrouping in addition is when you add numbers without carrying over any values.

• Regrouping in addition is when you subtract numbers from each other.

• Regrouping in addition is when you multiply numbers together.

Tags

CCSS.2.NBT.B.7

What is a strategy for subtraction?

• Count back from the larger number.

• Add the smaller number to the larger number.

• Multiply the numbers together.

• Divide the larger number by the smaller number.

Tags

CCSS.1.OA.C.6

What is a strategy for addition?

• To count on from the larger number.

• To subtract the smaller number from the larger number.

• To multiply the two numbers together.

• To divide the larger number by the smaller number.

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

How do you subtract numbers?

• You add the values of both numbers together.

• You take away the value of one number from another.

• You multiply the two numbers together.

• You divide one number by the other.

What is a sum?

• A sum is the result of adding two or more numbers together.

• A sum is the difference between two numbers.

• A sum is the product of two numbers.

• A sum is a mathematical operation that involves subtraction.

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2