B. multiply
left
right
the same
different
divide
vertical
sum
difference
rightmost
dividend
multiplicand
divisor
horizontal
leftmost
Rules in Multiplying Rational Numbers in Decimal Form.
Step 1: Arrange the numbers in a (1)________column.
Step 2: (2)_______ the numbers, as if you are multiplying whole numbers.
Step 3: Starting from the (3)_______ end of the product, move the decimal point to the (4)_____ the same number of places as the (5)_______ of the decimal places in the multiplicand and the multiplier.

Rules in dividing Rational Numbers in Decimal Form.
Step 1: If the divisor is a whole number, divide the (6)_______ by the (7)______ applying the rules of a whole number. The position of the decimal point is the same as that in the dividend.
Step 2: If the divisor is not a whole number, make the divisor a whole number by moving the decimal point in the divisor to the (8)______ end, making the number seem like a whole number. Step 3: Move the decimal point in the dividend to the (9)_______ the same number of places as the decimal point was moved to make the divisor a whole number.
Step 4: Lastly (10)_______ the new dividend by the new divisor. ​