Solving Two-Digit Number Problems: Equations & Reversals

A two-digit number is such that if you reverse its digits, the new number is 27 less than the original number. If the sum of the digits is 11, what is the original number?

• 74

• 49

• 82

• 63

Tags

CCSS.8.EE.C.8C

The sum of a two-digit number and the number formed by reversing its digits is 99. If the tens digit is 3 more than the units digit, what are the two-digit number and its reverse?

• 81 and 18

• 72 and 27

• 54 and 45

• The two-digit number is 63 and its reverse is 36.

Tags

CCSS.8.EE.C.8C

A two-digit number has digits that are reversed to form another number. The difference between the two numbers is 36. If the tens digit is twice the units digit, what is the original number?

• 84

• 63

• 48

• 72

Tags

CCSS.8.EE.C.7B

If a two-digit number is reversed, the new number is 18 more than the original number. If the sum of the digits is 9, what is the original number?

• 45

• 54

• 36

• 72

A two-digit number is 4 times the sum of its digits. When the digits are reversed, the new number is 36 less than the original. What is the original number?

• 24

• 48

• 56

• 72

The difference between a two-digit number and the number formed by reversing its digits is 45. If the sum of the digits is 12, what are the two-digit number and its reverse?

• The two-digit number is 72 and its reverse is 27.

• The two-digit number is 63 and its reverse is 36.

• The two-digit number is 51 and its reverse is 15.

• The two-digit number is 84 and its reverse is 48.

A two-digit number is such that reversing its digits gives a number that is 9 less than twice the original number. If the sum of the digits is 10, what is the original number?

• 46

• 37

• 28

• 53

Tags

CCSS.8.EE.C.7B

The sum of a two-digit number and its reverse is 121. If the tens digit is 5 less than the units digit, what are the two-digit number and its reverse?

• 38 and 83

• 56 and 65

• 29 and 92

• 47 and 74

Tags

CCSS.8.EE.C.8C

A two-digit number is 3 times the sum of its digits. When the digits are reversed, the new number is 27 more than the original. What is the original number?

• 18

• 27

• 45

• 36

If a two-digit number is reversed, the new number is 54 less than the original number. If the sum of the digits is 15, what is the original number?

• 96

• 63

• 75

• 87