Vocabulary
Something that makes sense when facts are taken into account.
Reasonable
100+99+1=?
200
5621+1999=
7620
TEN HUNDREDS regroups to what?
1 THOUSAND
What is the result of an addition problem?
Sum
A number being added.
Addend
The SUM of 1000 apples and 500 apples.
1500 apples
9,999 + 9,999=
19,998
10 TENS regroups to what?
1 HUNDRED
To give an approximate answer based on mathematical thinking.
Estimate
9,999 plus 1,001 equals what sum?
11,000
1,111+1,111=
2,222
How many TENS in 1 HUNDRED?
10
Compose or decompose ones, tens, hundreds, thousands, and so forth.
Regroup
The sum of 10 MILLION and 5 HUNDRED THOUSAND.
1,500,000
5,679+3,456
9,135
How many HUNDRED THOUSAND in 1 MILLION?
10
A set of routine steps used to solve problems.
Algorithm
True or False: 1 million is a REASONABLE estimate to the sum of 557,975 and 432,568.
True
True or False: The biggest SUM you can ever have is 999,999,999,999,999,999.
False
How many HUNDREDS in 10 THOUSAND?
100