Exponents
Write 10 × 10 × 10 as an exponent.
10³
Estimate 45 × 10².
4,500
Write 100,000 as a power of ten.
10⁵
A taxi ride costs $57. If 10 people take the ride, how much total?
$570
Multiply: 32 × 40
1,280
Which is larger: 10⁴ or 10 × 10 × 10 × 5?
10 × 10 × 10 × 5 = 500 is smaller; 10⁴ = 10,000 is larger.
Which is closer to 8,000? 79 × 10² or 8 × 10³?
8 × 10³ = 8,000 is exact.
Which is equivalent to 10 × 10 × 10 × 10 × 10?
10⁵ OR 100,000
A book costs $38. If 25 students buy one, how much money total?
$950
Solve using partial products: 23 × 17
(20 × 10) + (20 × 7) + (3 × 10) + (3 × 7) = 230 + 70 + 30 + 21 = 391
Solve 6 × 10³.
6,000
A pencil costs $3. What is the cost of 3 × 10² pencils?
3 × 300 = $900
82 × 10⁴
820,000
A concert ticket is $125. If 48 tickets are sold, how much money?
$6,000
Use Box Method 46 × 52
(40 + 6)(50 + 2) = (40 × 50) + (40 × 2) + (6 × 50) + (6 × 2) = 2,000 + 80 + 300 + 12 = 2,392
What does 10⁵ equal?
100,000 OR 10 x 10 x 10 x 10 x 10
Write 5 × 10⁴ in standard form.
50,000
Which is larger: 6 × 10⁵ or 60 × 10³?
Both = 600,000 (they are equal).
Estimate 627 × 38 by rounding.
Round to 600 × 40 = 24,000
Multiply: 75 × 104
7,800
A number has 6 zeros. Write it as a power of ten.
1,000,000
7 × 10⁵ = ______
700,000
A stadium seats 25,000 people. Write this number in (powers of ten).
2.5 × 10⁴
DOUBLE POINTS!!!!!!!
A factory makes 456 boxes of pencils each day. Each box has 24 pencils. How many pencils in 5 days?
456 × 24 = 10,944 per day → × 5 = 54,720 pencils
248 × 36
8,928