Regrouping
Regroup: 13 ones is _____ ten(s) and ______ one(s)
1 ten and 3 ones
Estimate 538 + 429 to the nearest ten
540 + 430 = 960
538 + 429
967
Abi practices her flute for 215 minutes last week and 178 minutes this week. How many minutes has Abi practiced?
393 minutes
What are the numbers being added together called?
Addends
10 tens is the same as __________ hundred(s)
1
Estimate 678 + 129 to the nearest ten
680 +130 = 810
415 + 198
613
DOUBLE POINTS: Jasons family drove from Ocala, Florida to Miami. They drove 139 miles in the morning and 187 miles in the afternoon.
1) How far did they drive?
2) How far would the TOTAL trip (there AND back) be?
139 + 187 = 326 miles to get there
326 + 326 = 625 miles total
The result of an addition problem is called the _____ (spelling counts)
sum
12 tens is _________ hundred(s) and _______ ten(s)
1 hundred and 2 tens
Estimate 564 + 283 to the nearest ten
Show how to find 678 + 129 using partial sums
600 + 100 = 700
70 + 20 = 90
8 + 9 = 15
815
Do you need to regroup to add 546 + 327? Explain why or why not.
You need to regroup because the ones add up to 13. This is regrouped to be 1 ten and 3 ones.
What is the answer to a multiplication problem called?
Product
Regroup: 32 tens is the same as ________ hundreds and ________ tens
3 hundreds and 2 tens
What three smaller problems are used to add 365 + 422 using partial sums. Find the total sum.
300 + 400 = 700
60 + 20 = 80
5 + 2 = 7
787
564 + 283
Show your work with partial sums
500 + 200 = 700
60 + 80 = 140
4 + 3 = 7
847
When the first Ferris wheel was build in 1893, it was 264 feet high. The roller coaster Kingda Ka is 192 feet taller than the first ferris wheel. Find the height of Kingda Ka. Then, use < and > to compare the two heights in two different ways
192 < 456
456 > 192
What is the answer to a subtraction problem called?
Difference
1 hundred and 8 tens
A school cafeteria sold 255 lunches on Monday, 140 lunches on Tuesday, and 226 lunches on Wednesday. Did the cafeteria sell more lunches on Monday and Tuesday or more lunches on Tuesday and Wednesday?
Monday and Tuesday
Check the work for 149 + 395. What are the two mistakes that were made while showing work?
100 + 300 = 400
40 + 90 = 120
9 + 5 = 15
535
40 + 90 = 130
and 9 + 5 = 14
This affected the final sum.
Pete can run 178 yards in one minute. Sharon can run 119 more yards than Pete in one minute. How many yards can they both run in one minute?
In 15 - 9 = 6, what is the number 15 called?
Minuend