Place Value & Rounding
What is the value of the 8 in 38,146?
8,000 or eight thousand
How many centimeters are in 1 meter?
100 centimeters
12,000 + 5,000= ?
17,000
5 times as much as 4 is what number?
20
Ben reads 12 pages. Kim reads 3 times as many pages as Ben. How many pages does Kim read?
36 pages (12 x3)
Round 27,483 to the nearest thousand.
27,000
7 meters = how many centimeters?
700 cm
125,400 + 13,200
138, 600
Fill in the blank: 56 is 8 times as much as ______.
7
A store sold 4,250 pencils in April and 3,180 pencils in May. How many pencils did the store sell in all?
7,430 pencils — 4,250 + 3,180
Write 90,250 in expanded form.
(9 × 10,000) + (2 × 100) + (5 × 10) OR 90,000 + 200 + 50
Which is longer: 3 kilometers or 2,500 meters?
3 km = 3,000 m, which is more than 2,500 m.
46,285 + 37,169=
83,454
Write an equation to represent: "45 is 9 times as much as 5."
45= 9 x 5 (yes, order matters!!)
A theater has 1,200 seats. 875 seats are filled. How many seats are empty?
325 seats — 1,200 − 875
Look at the number 66,000. The 6 in the ten thousands place is how many times as much as the 6 in the thousands place?
10 times as much.
A hallway is 6 meters 25 centimeters long. How many centimeters is that?
625 cm — 6 m = 600 cm, plus 25 cm.
70,000 − 24,600=
45,400
Use 18 = 3 × 6 to write TWO different "times as much" statements.
18 is 3 times as much as 6
18 is 6 times as much as 3.
Aldo scores 8 points. Iker scores 4 times as many points as Aldo. Mateo scores 6 fewer points than Iker. How many points does Mateo score?
26 points — Iker: 8 × 4 = 32, then 32 − 6 = 26
Round 749,518 two ways: to the nearest ten thousand AND to the nearest hundred thousand.
750,000 and 700,000
A rope is 3 meters long. Maria cuts off 85 centimeters. How many centimeters of rope are left?
215 cm — convert first: 3 m = 300 cm, then 300 − 85 = 215
523,104 − 248,376 =
274,728
Fill in both blanks: 400 is 10 times as much as ______, and ______ is 10 times as much as 400.
40 and 4,000
A farm picked 425,600 pounds of oranges in two weeks. In Week 1 they picked 218,475 pounds. First estimate how many pounds they picked in Week 2 by rounding to the nearest ten thousand, then find the exact number.
Estimate about 210,000 pounds (430,000 − 220,000); exact answer 207,125 pounds