Lesson 1-2: Add and subtract 2-digit numbers

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of finding the difference between two numbers by taking one number away from another.

Tags

CCSS.2.OA.A.1

Front

What is the sum of 64 and 29?

Back

93

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the difference between 64 and 29?

Back

35

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is 45 + 29?

Back

74

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 47 + 25?

Back

72

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 17 + 8?

Back

25

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is 47 + 0?

Back

47

Tags

CCSS.1.OA.B.3

Front

What does it mean to find the difference?

Back

Finding the difference means subtracting one number from another.

Tags

CCSS.5.NBT.B.7

Front

What is a two-digit number?

Back

A two-digit number is a number that has two places, such as 10 to 99.

Tags

CCSS.1.NBT.A.1