Place Value
What is the value of the digit 4 in 47,325?
Ten Thousands
Estimate 550 + 630 by rounding each number to the nearest hundred.
1,200 (600 + 600)
Calculate mentally: 35 x 4
140
What is 4²?
16
Write 54,467 in words.
Fifty-four thousand, four hundred sixty-seven.
In the number 2,583,214, which digit is in the hundred-thousands place?
5
Estimate 3.94 + 1.42 by rounding each number to the nearest tenth.
5.30 (3.90 + 1.40)
Calculate mentally: 104 + 98
Write 5 × 5 × 5 × 5 x 5 x 5 using an exponent
56
Write 54,459 in expanded form using powers of 10.
(5 x 104) + (4 x 103)+ (4 x 102) + (50 x 101) + (9 x 100)
What number is represented by 5,000,000 + 60,000 + 8000 + 4?
5,068,004
Estimate 253 ÷ 13 using compatible numbers.
25 (250 ÷ 10)
*There can be other correct answers
Calculate mentally: 4,500 ÷ 9
500
(What was your strategy? Explain to Mr. Baux)
What is 2.15 x 104?
21,500
How would I write the number 144 in exponential form?
122
In which place value is the underlined number?
314.5821
Hundredths
Estimate 4,892 ÷ 51 using compatible numbers.
100 (5000 ÷ 50)
Calculate mentally: 250 × 20
5000
(What was your strategy?)
8.9 x 10-3
What is 5.35 x 106 in word form?
5 million, three hundred fifty thousand
What number is: (7 x 106) + (9 x 105)+ (5 x 104) + (3 x 103) + (1 x 101) + (2 x 100)?
7,950,312
A school has 389 students. Each student spends about $28 per week on Pizza Pizza. Estimate the weekly cost (without a calculator).
$12,000 (400 x $30)
*There can be other correct answers for estimating this amount
Calculate mentally: 125 × 48
6000
(Remember this question from the last Jeopardy! game?)
Evaluate: (52) + (5 x 10-2)
25 x 0.05 = 1.25
A number is represented as (4 × 103) + (7 × 102) + (3 × 101) + (8 × 100). What is that number in word form?
Four thousand, seven hundred thirty-eight.