PG1
Place Value
Place Value
What are the next three values of the sequence:
10, 20, 30, 40, ___, ___, ___ ...
10, 20, 30, 40, 50, 60, 70...
2 + 4 =
2 + 4 = 6
Count backwards to find the next three numbers of the sequence:
15, 14, 13, ___, ___, ___, ...
15, 14, 13, 12, 11, 10, ...
6+(2+4)=
6+(2+4)=12
Solve for the unknown:
6+m=10
m=4
because
6+4=10
What are the next three values of the sequence:
100, 200, 300, 400, ___, ___, ___ ...
100, 200, 300, 400, 500, 600, 700 ...
Re-write the equivalent equation using the COMMUNITATIVE PROPERTY:
2+3=5 so, ___+___=5
2+3=5 so, 3+2=5
Anna read eight pages to Piper before lunch, the she read six more pages before dinner. How many pages in all has Anna read today?
eight plus six equals fourteen pages total
Give an example of the Associative Property:
5+(5+1)=(___+___)+___
5+(5+1)=(5+5)+1
or
5+(5+1)=(1+5)+5
or
5+(5+1)=(5+1)+5
Solve for the unknown:
7+h=11
h=4
because
7+4=11
3 hundreds, 2 tens and 6 ones combined gives you _____ .
326
________ is combining two or more values.
ADDITION
8+4 can be regrouped as (___+___)+2
8+4 can be regrouped as (8+2)+2
_____ numbers always end in 1, 3, 5, 7, or 9.
"ODD" NUMBERS
Solve for the unknown:
g+4=7
g=3
because
3+4=7
________ value uses units/ ones, tens, and hundreds.
"PLACE" VALUE
The _______ sign means "to combine".
"PLUS" SIGN +
______ are used to group values together.
PARENTHESES ( )
_____ counting is fast adding of the same number by skipping values.
"SKIP" COUNTING
_____ for the _____ means to look for a missing value in an equation.
SOLVING for the UNKNOWN
The decimal system is a ______ ______ system used for counting and measurement.
BASE-10
The ________ property says that 3+5 and 5+3 produce the same answer.
COMMUTATIVE PROPERTY
_____ is changing something from one group to another.
REGROUPING
the ______ property of addition shows that numbers can be regrouped without changing the sum. 3+(3+1) = (3+3)+1
"ASSOCIATIVE" PROPERTY
A _____ _____ is when both sides of the equal sign are the same value.
BALANCED EQUATION