Use rounding to Estimate Sums
457+322
500+300=800
or
460+320=780
Estimate the sum of 432+489 using compatible numbers
425+475=900
or about 900
In the following number , which digit is in the ones place value:
724
4
Using the identity property of addtion tell what 7,891+0 is.
7,891
round 63 to the nearest 10
60
475+438
500+400=900
or
480+440=920
Estimate the sum of 428+286 using compatible numbers
425+275=700
Or about 700
Ada writes 10+8=18 on the board. Maria wants to use the Commutative Property of Additon to rewrite Ada's addition sentence. What number sentence should maria write?
8+10=18
Give an example of the identity property of addition
3+0=3
or anything similar
Round 172 to the nearest Hundred
200
881+152
900+200=1,100
or
880+150=1,030
Estimate the sum of 327 + 581 using compatible numbers
325+600=925
or about 925
Marvella writes the addition problem 5+6. Is the sum even or odd?
Odd
what does the commutative property of addition state?
You can add two or more number in any any order and get the same sum
Round 155 to the nearest 10 and 100
Nearest ten: 160
Nearest hundred: 200
Jack read 72 pages on Sunday and 83 pages on Monday. ABout how many pages did Stephanie read during the two days?
Round to the nearest 10
70+80=150
Estimate the sum of 421+218 using compatible numbers
425+225=650
Or about 650
Write a number using the follow 3 digits:
1,2,3
Make sure that the 3 is in the hundreds place value.
312
or
321
what property of addtion does this show:
3+4=7 & 4+3=7
so, 3+4=4+3
Commutative property of addition
Mia's baseball is 32 inches long. What is its length rounded to the nearest 10 inches?
30
Seth bought a pair of sneakers for $48 and a jacket for $64. About how much money did seth spend on the sneakers and the jacket?
Seth spent about $110 on the sneakers and jacket.
Ryan counted 63 birds in his backyard last week. This week he counted 71 birds in his backyard. Use compatible number to find out about how many birds Ryan counted.
65+70=135
Or about 135
There are 372 workers at a software company. There are 483 workers at a lumber company. When rounding to the nearest hundred, which company has 400 workers?
The software company
Which property of addition states that 0 + any number=that number?
Identity property of addition
Cole says that 555 ronded to the nearest ten is 600.
What is cole's error?
555 rounded to the nearest 10 is 560.
Cole rounded to the nearest hundred instead of the nearest ten