Strategies
What are the 3 strategies we use in class to solve 3 and 4 digit addition problems?
Place Value Chart
Base Ten Blocks
Expanded Form
Solve the following and tell me which number is in the thousandths column
746 + 527
1,273
1 or 1000
Solve the following and tell me which number is in the ones column:
2425 + 1827
4,252
2
Solve the following:
34283+ 34593
Which number is in the thousands column?
68,876
68 or 68000
What do the 3 strategies we use in class to solve addition problems have in common?
They each maintain place value
Solve the following and tell me which number is in the ones column
567+234
801
1
Solve the following and tell me which number is in the tens column:
2239+3644
5,883
8 or 80
Why is the thousands column the only column allowed to have a 2 digit number?
Because you need 1000 1000's before you get 1000000 or 1 million
Which strategy involves drawing manipulatives (different shapes) to help solve the addition problem?
Base Ten Block Strategy
Solve the following and tell me which number is in the tens column:
289 + 976
1,275
7 or 70
Solve the following and tell me which number is in the thousands column:
7834+7234
8, 068
8 or 8000
What is the highest place value column you need for the sum of 6859+6387?
13,246
thousandths
Regardless of strategy used, what do you need to remember when working on addition problems?
Keep place value
285 + 578
863
6 or 60
Solve the following and tell me which number is in the tens column:
2400 + 4708
7,108
0
Solve the following and tell me which number is in the hundredths column:
526 + 4376
4,902
4 is in the hundredths column
Use expanded form to solve the following question:
232 + 463
200 + 30 + 2 + 400 + 60 + 3
600 + 90 + 5
695
Solve the problem below:
189 + 988
Which number is in the tens column if you switch the thousands and tens in your sum?
1,177
7 is in the tens and 1 is in the thousands... so if you switch them around you would have 1 in your tens column
Solve the following:
7289+5398
Which columns would you need in a place value chart to account for each number in your sum?
12,687
ones, tens, hundreds, and thousands
Solve the following and tell me which number is in the MILLIONS column:
67,123+ 43,253
110,376
1 is in the millions column