Chapter 1
Order of Operation, Estimation, & Exponent
Multiplication & Division
World Problem
100

Write the number in standard form Two hundred five thousand, twenty-two

205, 022

100

21 x 103

21,000

100

Estimate 4,873 : 71 = 

70

100

Leo had an equal number of pens and pencils. He sold 80 pens. He then had 5 times as many pencils as he had remaining pens. How many pens did he have at first? 

Model, Equation, Sentence


100

200

9,075,002

Nine million, seventy-five thousand, two

200

723 x 52= 

35,000

200

378 : 12 = 

31 R 4

200

Aurora bought 300 bags at 5 for $25. She then sold all of them at 2 for $16. How much profit did she make? 


$900

300

Write the value of the digit 9 in this number:

598,200

90,000

300

60/3 - 5  + 2 x 3 = 

21

300

5,432 x 52 =

282,464

300

Anders can pick 5 pounds of strawberries in one hour. 

a. How long does he take to pick 40 pounds of strawberries? 

Write the equation and sentence

E: 40/ 5 = 8

S: It takes him 8 hours to pick 40 pounds of strawberries

400

Find the rule. Then complete the number pattern:

2,310,000      3,311,000       4,312,000 ___________

+1,001,000


400

100/ (20+5) +[(9-4) x 2] =

14

400

6324 : 28 = 

225 R 24

400

b. If Anders is paid $10 per hour. How much does Anders earn if he picks twice the total weight of strawberries in a.? 

Write the equation and sentence

E: $10 x (2x8)

S: He earned $160

500

Round to the nearest thousand place:

4,499 + 5,500+9,175  = 

4,000 + 6,000+9,000 = 19,000

500

Estimate 41 x 88

3,600

500

504:15

33 R 9

500

There are 980 students in Live Oak. There are 300 more students at The King's Academy. The number of students in Haman Elementary is half the total number of students in Live Oak and King's Academy combined. How many students are there in Haman Elementary? 

The King's Academy = 1280

Haman Elementary: (980+1280):2 = 1130