Backtracking

Which number can be placed in the empty box in the given flowchart?

• 17

• 7

• 60

• 36

Which number can be placed in the first empty box in the given flowchart?

• 5

• 14

• 7

• 12

Which number can be placed in the second empty box in the given flowchart?

• 7

• 12

• 14

• 36

Refer to the given flowchart. The answers in order are:

• 5,3

• 3,5

• 2,5

• 5,2

The inverse of addition is

• addition

• subtraction

• multiplication

• division

The inverse of subtraction is

• addition

• subtraction

• multiplication

• division

The inverse of multiplication is

• addition

• subtraction

• multiplication

• division

the inverse of division is

• addition

• subtraction

• multiplication

• division

The ? opposite x5 is

• - 5

• + 5

• x 5

• ÷ 5

The ? opposite -3 is

• + 3

• - 3

• x 3

• ÷ 3