Adding and subtracting two-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 54 and 35?

Back

89

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 71 minus 43?

Back

28

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the subtraction problem shown: 51 - 23 = ?

Back

51 - 23 = 28

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the result of 88 - 74?

Back

14

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What does it mean to 'borrow' in subtraction?

Back

Borrowing is a method used in subtraction when the top digit is smaller than the bottom digit.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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

Front

What is the difference between 41 and 27?

Back

14

Tags

CCSS.2.OA.A.1

Front

If you add 20 to 30, what do you get?

Back

50

Tags

CCSS.2.NBT.B.5