Group the digits in threes from the right: ones, thousands, millions, billions. Each place is worth ten times the place to its right.
milliona thousand thousands: 1,000,000
billiona thousand millions: 1,000,000,000
perioda group of three places between commas
valuewhat a digit is worth in its place
Watch for: Writing the digit instead of its value: 6 instead of 60,000,000. Dropping zeros in the middle: 305,020,700 written as 35,027. Comparing numbers with different numbers of digits from the right.
At home: Look up a population or distance in the millions and read it aloud together, then ask what the 7 in it is worth.
Sample sheet and answer key
Luna's Space Adventure
Grade 4 · Place value to a billion · 4.2B
NameDate
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
What is the digit worth?
Find the place, then write its value.
In 316,388,421, the thousands digit is worth
In 899,169,968, the ten millions digit is worth
In 458,864,580, the ten thousands digit is worth
In 229,823,922, the thousands digit is worth
Words to digits
Write each number with digits and commas.
nine hundred eighty million two hundred one
one billion
Expanded form
Write it as a sum of place values.
40,420,000 =
530,009,000 =
Compare
Line up the places and compare from the left.
117,582,591 is ___ 57,582,591greater thanless than
108,326,325 is ___ 108,326,305greater thanless than
178,859,524 is ___ 179,059,524greater thanless than
256,268,641 is ___ 256,276,641greater thanless than
Order them
Write them from least to greatest.
598,425,000 · 542,633,000 · 565,968,000
196,328,000 · 184,039,000 · 177,701,000
Grade 4 · Sheet
Luna's Space Adventure
Grade 4 · Place value to a billion · 4.2B
Answer key
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
What is the digit worth?
Find the place, then write its value.
In 316,388,421, the thousands digit is worth8,000
In 899,169,968, the ten millions digit is worth90,000,000
In 458,864,580, the ten thousands digit is worth60,000
In 229,823,922, the thousands digit is worth3,000
Words to digits
Write each number with digits and commas.
nine hundred eighty million two hundred one980,000,201
one billion1,000,000,000
Expanded form
Write it as a sum of place values.
40,420,000 =40,000,000 + 400,000 + 20,000
530,009,000 =500,000,000 + 30,000,000 + 9,000
Compare
Line up the places and compare from the left.
117,582,591 is ___ 57,582,591greater thanless than
108,326,325 is ___ 108,326,305greater thanless than
178,859,524 is ___ 179,059,524greater thanless than
256,268,641 is ___ 256,276,641greater thanless than
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New problems every time, three levels (gentle, core and stretch), themes to pick from, a second page if you want one. Each sheet comes with an answer key and a one-page guide for grown-ups.
