Module 1
7 x 105
700,000
33+67 and 9x (33+67)
33+67=100 9x (33+67)=900
673x29
19517
0.01 x 234.86
2.3486
A rectangle is always a rhombus (Truth or False)
False
50 x _ = 2 x 102
40
Nayla works at a fast food store. The store has the bins shown. On Monday the bins are full. The stock sells 13 pounds of granola by Friday. Nayla wants to evenly divide the remaining granola in the 7 bins. Use parentheses to rewrite the numerical expression to model the amount that will be in each bin, 2 pounds. 4x3+3x5-13 ÷ 7
(4x3)+(3x5)-13) ÷ 7= 2
61x893
54473
The Etruscan shrew is the smallest mammal in the world. An Adult Etruscan shrew is 1.5g. How much would it weigh if there are 5 Etruscan shrews?
7.5
456.3 x 8
3,648
What number is 1/10 of 900,000?
90000
write a numerical expression to module the words. Add 5 and 25, and then multiply by 4
(5+25)+4
Tina buys cereal to donate. If there are 345 children and each children get 67 bags of cereal, how many bags of cereal does Tina need to buy?
23115
A human hair grows 0.43 millimeters each day. In one week do you expect the hair to grow 3.7 millimeters? Explain
One week has 7 days so we multiply 0.43 with 7. The answer was 3.01. (0.43x7=3.01). 3.01< 3.7 so no the hair couldn't grow 3.7 millimeters in one week.
0.05 x 4,566
228.3
(3 x 102) x (9 x 103)
2,700,000
Rewrite (4+2)x3 using the Distributive property, then evaluate.
(4x3)+(2x8)=18
here are in total 283 passengers on the Emirates plane. Each passengers will eat three meals a day. The flight takes 2 weeks. Amira guessed that they will need 2460 meals for the Emirates plane. Is Amira correct or not? Explain.
she is wrong because the correct answer is 11886
A potato is 1.65 dollars each pound. A broccoli is 2.45 dollars each pound. Juana buy 3 potatoes, Pat bought 2 broccolis. Who payed more?
1.65 x 3 = 4.95 , 2.45 x 2 = 4.90, 4.95 > 4. 9 . Juana payed more.
Explain how to divide 47 by 103.
Move 3 places forward in 47 because 103 represents 1000. Then the answer is 0.047!
The population of the town Xa lives in is about 9x103. The population of the town Xi lives in is about 5x104. Whose town has the greater population? By how many people?
Town Xi has 41,000 people more than Town Xa.
Ervin evaluates 12÷(2+4)+6x3 by first dividing 12÷2 and then multiplying by 6x3. Then, he adds from left to right. Explain his errors
You can’t divide 12÷2 because you can’t take the number from the parenthesis.
Kasey is throwing a party. She needs lots of food for her guests. Right now, Kasey has 120 pizzas. Her mom gives her 19 pizzas, 19 pastas, 19 salads, and 19 cupcakes. How many food does she have in all?
196
A golf ball is 1.62 ounces. A volley ball is 9.55 ounces. A basket ball is 11 ounces. What is the combined weight of 2 golf ball, 3 volley ball and 1 basket ball?
42.95
An equilateral triangle can be an isosceles triangle. (True, maybe, no)
True