Multiple Decimal Operations

Problem 1

For first two days it snowed 2.6 centimeters each day. The next three days, it snowed 3.4 centimeters each day. How much did it snow on those five days?

Solution

Step 1:

Amount of snowfall on first two days

= 2 2.6

= 5.2 cm

Amount of snowfall on next three days

= 3 3.4

= 10.2 cm

Step 2:

Total snowfall in the five days

= 5.2 + 10.2

= 15.4 cm

Problem 2

Jamie ordered 7 pizzas and 8 burgers. Each pizza costs 12.85andeachburgercosts11.75. How much does she need to pay?

Solution

Step 1:

Cost of pizzas = 7 12.85 = $89.95

Cost of burgers = 8 11.75 = $94.00

Step 2:

Total amount to be paid = 89.95+94.00

= $183.95