My Word Cards
Use the examples for each word on the front of the
card to help complete the definitions on the back.
Glossary
✂
millions
place value
3,946
ons
milli
hundreds
6
1
0
ons
0, 0
s
sand
thou
0
0, 0
0, 0
0
0, 0
ones
0
0
expanded form
period
milli
0
s
sand
thou
ones
0
0
2,000 + 400 + 70 + 6
2,476
greater than symbol (>)
less than symbol (<)
10 7 5
5 6 10
10 is greater than 5
5 is less than 10
rounding
conjecture
halfway
634
600
650
700
Is 634 closer to 600 or 700?
There are more toys in the larger box
than the smaller box.
Topic 1 My Word Cards
3
✂
My Word Cards
Complete each definition. Extend learning by writing
your own definitions.
In a number, the period of three places to
the left of the thousands period is called
period.
the
A number written as the sum of
the values of its digits is written in
.
is the position of
a digit in a number that tells the value
of the digit.
In a number, a
is a group of three digits, separated by
commas, starting from the right.
In a number sentence, a symbol
that points toward a lesser
number or expression is called a
In a number sentence, a symbol
that points away from a greater
number or expression is called a
.
.
is a statement
A
that is believed to be true but has not
been proven.
4
Topic 1 My Word Cards
is a process that
determines which multiple of 10, 100,
1,000, and so on, a number is closest to.
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