Mental Math
5 x 300
1,500
What number goes in the blank?
8 x 396
(8 x 300) + (8 x ___) + (8 x 6)
90
2 x 45
90
Write an equation for 4 times as many as 5 is 20.
4 x 5 = 20
LES is selling popcorn. Fourth graders sold 55 boxes and each box holds 8 bags. Third graders sold 39 boxes. How many more bags of popcorn did the fourth graders sell than the third graders?
4th grade: 55 x 8 = 440 bags
3rd grade: 39 x 8 = 312 bags
440 - 312 = 128 bags more
8 x 5,000
40,000
What is missing to solve 4 x 865?
(__ x 800) + (__ x 60) + (__ x 5)
4
9 x 768
6,912
Write an equation for 42 is 7 times as many as 6.
42 = 7 x 6
Mrs. Lockhart bought each 4th grade class a bag of jump ropes. Each bag contained 14 ropes. She also bought each class a bag of footballs and each bag has 3 footballs. How many jump ropes and footballs does the entire 4th grade have?
9 x 14 = 126 jump ropes
9 x 3 = 27 footballs
126 + 27 = 153 ropes and footballs
9 x 90,000
810,000
Use the distributive property to solve 5 x 136
(5 x 100) + (5 x 30) + (5 x 6)
500 + 150 + 30
680
5 x 927
4,635
72 is ___ times as many as 8.
9
Lions at the Memphis Zoo eat 5 bags of snacks a day. A snack bag contains 12 different snacks. Zebras at the zoo eat 3 bags of snacks a day and the bag contains 5 different snacks. Which animal eats the most snacks in a day and how much more?
5 x 12 = 60 for lions
3 x 5 = 15 for zebras
60 - 15 = 45 so lions eat 45 more snacks a day than zebras
3 x 300,000
900,000
Use the distributive property to solve
7 x 3,452
(7 x 3,000) + (7 x 400) + (7 x 50) + (7 x 2)
21,000 + 2,800 + 350 + 14
4 x 2843
11,372
9 times as many as ___ is 108
12
The Memphis Tigers scored 8 times as many points as the Tennessee Volunteers in football last weekend.
Together they scored 72 points. How many points did each team score? Use a bar model, write an equation, and solve the problem.
Memphis scored 64 points, and Tennessee scored 8 points. Go Tigers!
8 x 2,000,000
16,000,000
Use distributive property to draw a model of the product 2 x 12
2 rows on the model
one section of 10 columns
one section of 2 columns
5 x 9267
46,335
Write a comparison sentence for 7 x 3 = 21
7 times as many as 3 is 21
Chef Andy made some desserts for a party. Chef Sally made 6 times that many desserts for the party. Together they made 21 desserts. How many desserts did each chef make? Use a bar model, write an equation, and solve the problem.
Chef Andy made 3 desserts, and Chef Sally made 18 desserts.