Extended Multiplication Facts
4 * 30 =
120
18 L = ______ mL
18,000
What is the area of a rectangle with a side that is 70 cm long and another side that is 12 cm long?
What is the perimeter?
A = 840 cm2
P = 164 cm
Solve the following using an area model and partial products.
83 * 79
6,557
Sarah has to buy some items at the store. She wants to know if her $70 is enough to purchase all of the items. Sarah needs to buy 3 cases of water, each case is $7.00. She also needs to get a cake and 12 balloons. The cake costs $20. The balloons cost $3 each. Will Sarah have enough money? What is the exact amount Sarah will spend?
Sarah will not have enough money. Sarah's total will be $77. She will need 7 more dollars to have the correct amount.
70 * 20 =
1,400
14.5 kg = ______ g
14,500
What is the side of a rectangle with one side that is 15 feet long and has an area of 405 square feet?
What is the perimeter?
Missing side = 27 feet
Perimeter = 84 feet
Solve the following using an area model and partial products.
42 * 36
1,512
Jon wanted to buy pizza for the entire class. There are 20 people in his class. He figured that each person would eat two slices and there are 8 slices in each pizza. Each pizza costs $12.00. How many pizzas will Jon need? How much will Jon spend? Explain your thinking.
John will need to buy 5 pizzas. I know this because 20 people * 2 slices each = 40 slices. 8 * ____ = 40 The missing number is 5. If each pizza is $12.00 then I will multiply 12 * 5 and get 60. Jon will spend $60 on the 5 pies he is ordering for his class.
6,000 * 30 =
180,000
27.5 feet = ______ inches
330
What is the missing side length of a rectangle with one side that is 83 cm long and a perimeter of 354 cm?
Missing side = 94 cm
Solve the following using an area model and partial products.
389 * 4
1,556
Katie has 2 flower beds to fill up with tulip bulbs. One flower bed measures 24 feet by 6 feet, and the other bed measures 15 feet by 8 feet. Each bulb needs about a square foot of space to grow. If Katie wants each bed to be half red tulips and half white tulips, how many of each color bulb should she buy?
Total area = 144 + 120 = 264 square feet. Katie should buy 132 of each color tulip. She can plant a total of 264 tulips in her garden. Since Katie wants half red and half white, I split the total in half. That gave me 132.
800 * ? = 32,000
40
32.5 hours = _____ minutes
1,950
Which has a greater area, a rectangle with sides 22 feet and 25 feet OR a rectangle with a side length of 8 feet and a perimeter of 96 feet?
22 x 25 = 550 feet2
8 + 8 = 16
96 - 16=80
80/2 = 40
40 x 8 = 320 feet 2
Solve the following using an area model and partial products.
4,927 * 6
29,562
Jim’s doctor said he should walk about 10,000 steps each day for his health, so Jim bought a Fitbit to record his steps. About 2,120 of Jim’s steps equal a mile. If Jim has walked about 4 miles today, how many steps has his Fitbit recorded so far?
How many more steps does Jim need to reach his goal?
Jim has walked 8,480 steps.
Jim needs to walk 1,520 more steps to reach his goal.
? * 70,000 = 28,000,000
400
87 3/4 feet = _________ inches
1,053
For a rectangle with a perimeter of 100 units, what are the dimensions of length and width that give the greatest area?
25x25 (square)
Solve the following using an area model and partial products.
97 x 93
9,021
Erik's family compared cell phone plans to get the best deal. At A-Mobile, the family plan is $45 for each of the first two lines and $12 for each additional line. At B-Mobile, the family plan is $60 for each of the first two lines and $8 for each additional line. Erik's family needs to purchase 6 cell phone lines. Which family plan should Erik's family go with? How much cheaper is it?
Plan A costs ($45 x 2) + ($12 x 4) = $138.
Plan B costs ($60 x 2) = ($8 x 4) = $152.
Erik's family should choose plan A because it would cost less money for six lines, by $14.