Extend Multiplication Facts
Solve using the partitioned rectangle strategy. 4 * 36 =
144
What is the area of shape 1?
80 square units
Winnie has to buy some items at the store. She wants to know if her $50 is enough to purchase all of the items. Winnie 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 $1 each. Will Winnie have enough money? What is the exact amount Winnie will spend?
Winnie will not have enough money. Winnie's total will be $53. She will need $3 more dollars to have the correct amount.
Solve using partial products. 2 * 71 =
142
What is the area of shape 2?
32 square units
Preston wanted to buy pizza for the entire class. There are 20 people in his class. He figured that each person would eat two slices. Each pie costs $12.00 and has 8 slices. How many pies will Preston need? How much will Preston spend? Explain your thinking.
Preston will need to buy 5 pizza pies. I know this because 20 people * 2 slices each = 40 slices. 8 * ____ = 40 The missing number is 5. If each pie is $12.00 then I will multiply 12 * 5 and get 60. Preston will spend $60 on the 5 pies he is ordering for his class.
Solve using the partitioned rectangle strategy. 83 * 94 =
7,802
What is the area of shape 3?
28 square units
Mrs. Chester has 2 flowerbeds to fill up with tulip bulbs. One flowerbed 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. How many tulips can Mrs. Chester plant?
Mrs. Chester can plant a total of 264 tulips in her garden. I know because 24 x 6 = 144 and 15 x 8 = 120. 120+144=264.
4.7 kg = ______ g
4.7 kg = 4,700 g
Solve using partial products. 76 * 32 =
2,432
What is the area and perimeter of shape 4?
Area = 28 square units
Perimeter = 32 units
Tigger’s doctor said he should walk about 10,000 steps each day for his health, so Tigger bought a Fitbit to record his steps. About 2,120 of Tigger’s steps equal a mile. If Tigger has walked about 4 miles today, how many steps has his Fitbit recorded so far? How many more steps does Tigger need to reach his goal?
Tigger has walked 8,480 steps because 2,120 x 4 = 8,480. Tigger needs to walk 1,520 more steps to reach is goal because 10,000 - 8,480 = 1,520.
3700 mL = ______ L
3700 mL = 37 L
Solve using either partial products or partitioned rectangle. 731 * 45 =
32,895
What is the area and perimeter of shape 5?
Area = 48 square units
Perimeter = 52 units
Cara’s Lawn Service must work on the Milnes School yard quickly because of a 3:00 p.m. storm prediction. Cara thinks it will take about 30 minutes for each task: trimming the bushes, mowing the lawn, weeding the flower beds, edging the lawn, raking, and cleaning up. They will begin working at 1:00 p.m. How long will it take 1 employee to do the work? How long for 2 employees working together? If you were Cara, how many employees would you send?
It would take 1 employee 180 minutes (3 hours) because there are 6 tasks, so 6x30=180. It would take 2 employees 90 minutes (1 and a half hours) because I divided 180 in half. I would send 2 employees because if they start at 1pm they will be done at 2:30pm, before the storm at 3pm!