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Estimation of whole number addition and subtraction.
Estimation of Whole Number Addition and Subtractio n To estimate means to find an answer that is close to the exact answer. The key with estimation is to only use it in instances that don’t require an exact answer. Estimation means to find an answer that makes sense and works with the problem, but is not necessarily exact. You can estimate sums (the answers to addition problems), and differences (the answers to subtraction problems) . The first step in estimating a sum or a difference is to round the numbers, by changing them to the nearest power of ten, hundred, thousand, etc. Round the numbers first, then use mental math to estimate an answer. When rounding, follow these rounding rules: When rounding, follow these rounding rules: When rounding, follow these rounding rules: If the number being rounded is less than 5, round down. If the number being rounded is 5 or greater, round up. Some key things to think about when estimating: The estimate m
1) 230 apples
ReplyDelete2)475 pennies
3)223 books
4)386 Pokémon cards
5)273 pencils
Wow! Amazing
DeleteJhanvi Jinlag 3U
Delete1.230 Apples
2.475 Pennies
3.223 Books
4.687 Pokemon Cards
5.273 Pencils
1- 230 apples
ReplyDelete2- 475 pennies
3- 223 books
4- 386 Pokémon cards
5- 273 pencils
That's Amazing Divyanshi!
DeleteShreenithi 3C
ReplyDelete1) There were 230 apples picked in total.
2) Alyssa have 475 pennies now.
3) Jason and Sally together have 223 books.
4) Mike have 386 Pokemon cards now.
5) There are 273 pencils now in total.
well done!!
DeleteKundan Isha. - 3A
ReplyDelete1. 230-Apples.
2. 475-pennies.
3. 223-books.
4. 386-pokeman cards.
5. 273-pencils.
Amazing!
Delete1.230 apples
ReplyDelete2.474 pennies
3.223 books
4.386 pokemon cards
5.273 pencils
1.230 apples
ReplyDelete2.474 pennies
3.223 books
4.386 pokemon cards
5.273 pencils
Batul 3-U
1) 230 apples
ReplyDelete2) 475 pennies
3) 223 books
4) 386 cards
5) 273 pencils
Shraddha R
3A
1. 230 apples
ReplyDelete2. 475 pennies
3. 223 books
4. 386 pokemon cards
5. 273 pencils
Yuvasri-3D
Aarush 3A
ReplyDelete1. 230 apples
2. 475 pennies
3. 223 books
4. 386 pokemon cards
5. 273 pencils
Surya 3h
ReplyDelete1.230 apples
2.475 pennies
3.223 books
4.386 pokemon cards
5.273 penciles
This comment has been removed by the author.
ReplyDeleteQ1. 230Apples
ReplyDeleteQ2. 475 Pennies left
Q3. 223 Books
Q4. 386Pokemon cards
Q5. 273Pencils
RISHABH-3Q
ReplyDelete1.230 apples
2.575pennies
3.223 cards
3.386 cards
5.273 Pencils
1. 230 apples.
ReplyDelete2. 475-pennies.
3. 223-books.
4. 386-poke man cards.
5. 273-pencils.
karthik [ 3B]
ReplyDeleteanswers key
1. 230 apples
2. 475 pennies
3. 223 books
4. 386 pokemon cards
5. 273 pencils
yalini-3W
ReplyDelete1. 230 apples
2. 475 pennies
3. 223 books
4. 386 pokemon cards
5. 273 pencils
Basil Varghese Ninan
ReplyDelete102+128=230
600+125=475
100+123=223
737+351=1088
136+137=273
Basil Varghese Ninan 3L
ReplyDelete102+128=230
600+125=475
100+123=223
737+351=1088
136+137=273
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