Add
28+15=
43
78-15=
63
What is the place value position of the 7 in the number 876?
Tens
Which is bigger 25 or 52? How do you know?
In the tens place, the 5 has a greater value than 2.
The Smith family took a vacation. They drove 256 miles on the first day and 287 miles on the second day. How many miles did they drive over the two days?
543 miles
126+34=
160
64-18=
46
Which position has the greatest value: tens, hundreds, or ones?
Hundreds
When adding and subtracting, I should ALWAYS begin with the numbers in which place value?
The ones place.
A scientist was observing a group of wildebeests over the course of 2 years. During the first year, there were 200 animals. The next year there were 155 animals. How many more animals were in the herd the first year?
45 wildebeests
276+258=
534
176-29=
147
What is the value of the 6 in the number 678?
600
Why is it necessary to regroup in the problem 28+17?
Because 8+7 in the ones place equals a value greater than 10.
Dina was adding books to the library shelves. She put 117 nonfiction books on the shelves. Then there were 204 nonfiction books on shelves. How many nonfiction books were on the shelves before Dina added books?
87 nonfiction books
418+35+26=
479
814-59=
755
Write this number in expanded form: 528
500+20+8
Is it necessary to regroup in the following problem? If so, why and how many times?
715-283=?
Yes, because it is not possible to take about 8 tens from 1 ten (or 80 from 10). It is necessary to regroup 1 time.
Mrs. Morris drove 116 more miles on Tuesday than on Monday. On Monday, she drove 235 miles. How many miles did she drive on Tuesday?
351 miles
564+199+237=
1,000
702-465=
237
Which 2 has the greater value in the number 252?
The first one: 200 or the one in the hundreds place.
Is this the correct way to break apart the following problem?
Problem: 156 + 348
Break apart: (100+300) + (50+4) + (6+8)
No, because the 4 in the problem has a value of 40, not just 4.
Texas has 254 counties. California has 58 counties. Florida has 67 counties. How many more counties does have Texas have than the number of counties in California and Florida combined?
129 counties