Estimate
1,400
236 x 4
944
A store orders 22 boxes of light bulbs. Each box has 148 bulbs. How many light bulbs does the store order?
22 x 148 =3,256 bulbs
24 x 103
24,000
0.82 + 4.21
5.03
Julie bought 32 boxes of calculators for her students. Each box has 12 calculators. About how many calculators did she buy?
30 x 10 = 300 calculators
22 x 45
990
An office manager buys 34 chairs for the new office. Each chair costs $205.
What is the total amount the office manager pays for chairs?
$6,970
34 x 100
34
2.65 + 3.78
6.43
Jerry has a budget of $400 for his soccer uniforms. He needs to buy 52 jerseys for his soccer team. Each jersey will costs $14. Does he have enough money?
No. 50 x 10 = 500. He has less than $500.
209 x 84
17,556
An online book store has 182 boxes of books in its warehouse. Each box has 32 books. How many books are there?
5,824 books
Is this correct? 83 x 104 = 83,000. Why?
The equation is incorrect. The product should have 4 zeros.
205.4 - 99.7
105.7
An online book store has 182 boxes of books in its warehouse. Each box has 32 books. Estimate how many books are in the warehouse.
180 x 30 = 5,400 books
OR
200 x 30 = 6,000 books
672 x 81
54,432
An airline has 47 planes that can each carry 108 passengers.
How many passengers can all of the planes carry?
5,076 passengers
80 x 102
8,000
Find the missing number
4.95 + ____ = 12.1
7.15
Josie wants to buy new clothes. Target is selling shirts for $8 and pants for $15. Josie wants to buy 3 shirts and 2 pants. Josie estimates that she will need $70 to buy everything she wants. Is she correct?
Yes. She will have enough money.
10 x 3= 30
20 x 2 = 40.
40 + 30 = 70
782 x 24
18,768
Joe has flown a total of 1,194 miles. Staci has flown 6 times as many miles has Joe. How many miles has Staci flown?
7,164 miles
(72 x 103)+(32 x 10)
72,320
13.5 + 5.7 + 36.5
55.7