Addition
Solve:
3,012 + 5,153
8,165
Solve:
6,543 - 5,432
1,111
There are 238 students in one grade and 316 in another. About how many students are there altogether? Use estimation and rounding.
238 rounds to 200, and 316 rounds to 300.
200 + 300 = 500
What comes next:
4,505 5,505 6,505 7,505
What is the value of the digit 8?
3,890
8 Hundreds or 800
What is:
4,209 + 1,519
5,728
The difference between:
8,876 - 4,590
What is 4,286
The library has 482 books on one shelf and 217 on another. Estimate the total number of books.
482 rounds to 500, and 217 rounds to 200.
500 + 200 = 700
About 700 books in total.
The next number in this sequence is:
410, 425, 440, ____
What is 455?
Write this number in expanded form:
498
400 + 90 + 8
What is:
6,198 + 2,222
8,420
The difference between:
5,000 - 4,010
Round 673 to the nearest hundred.
Explain how you know.
The tens digit is 7, which is 5 or more, so you round up.
673 rounds to 700.
987, 887, 787, 687
What is -100?
Write this number in expanded form:
5,987
5,000 + 900 + 80 + 7
What is:
7,777 + 1,888
9,665
The difference between:
9,876 - 5,992
3,884
If 429 ≈ 400, what place value helps you decide how to round?
You look at the tens place (the 2 in 429) to decide how to round to the nearest hundred.
Since 2 is less than 5, you round down to 400.
The tens place helps you decide.
What comes next:
1,790 1,890 1,990
2,090
Write this number in standard form:
six thousand nine hundred five
What is:
6,905
What is:
9,999 + 9,999
19,998
The difference between 10,000 - 5,432
What is 4,568
About how many more is 685 than 212?
685 rounds to 700, and 212 rounds to 200.
700 − 200 = 500
About 500 more.
The number that comes next is:
9,870 8,770 7,670 6,570
What is:
5,470
Draw a Place Value Chart, write a number and explain each digit/value.
Answers will vary.