Place Value
What is the value of the 7 in 472,615
70,000 (seventy thousand)
Write >, <, or =
48,309 ___ 48,903
48,309 < 48,903
Use mental math:
450 + 150
600
Add:
3,456 + 2,321
5,777
Multiply:
6 × 40
240
Fill in the blank, then find the product:
4 × 23 = (4 × 20) + (4 × ___)
3 · 80 + 12 = 92
Write this number in standard form:
600,000 + 4,000 + 300 + 9
604,309
Round 6,748 to the nearest hundred.
6,700
Use compensation to find:
298 + 135
433 (300 + 135 = 435, then 435 − 2)
Subtract:
8,624 − 3,517
5,107
Multiply:
7 × 300
2,100
Use partial products to multiply:
3 × 46
120 + 18 = 138
Write 305,042 in word form.
three hundred five thousand, forty-two
Round 352,617 to the nearest ten thousand.
350,000
Estimate by rounding to the nearest thousand:
4,872 + 2,315
5,000 + 2,000 = 7,000
Add:
45,368 + 27,594
72,962
Multiply:
5 × 8,000
40,000
Multiply:
5 × 214
1,070
In 55,000, the value of the first 5 is how many times the value of the second 5?
10 times (50,000 is 10 × 5,000)
Order from least to greatest:
92,135 · 91,253 · 92,153
91,253 · 92,135 · 92,153
Use counting on to subtract:
1,000 − 375
625
Subtract across zeros:
6,000 − 2,358
3,642
Estimate the product by rounding:
4 × 289
4 × 300 = 1,200
Multiply:
6 × 1,342
8,052
How many thousands are in 230,000?
230 thousands
What is the greatest whole number that rounds to 5,000 when rounded to the nearest thousand?
5,499
Estimate by rounding to the nearest ten thousand:
61,802 − 28,145
60,000 − 30,000 = 30,000
A school library had 12,450 books. It gave away 3,875 books, then bought 1,200 new books. How many books does the library have now?
9,775 books
A factory packs 1,975 crayons in each crate. Estimate how many crayons are in 6 crates. Is the exact answer more or less than your estimate?
About 12,000 · the exact answer is less
A theater has 7 sections. Each section has 156 seats. How many seats are in the theater?
1,092 seats