Rounding Numbers
Time
Bar Graphs
Multiplication
Number Grid Difference
100
Round 52 to the nearest 10. Use a number grid.
50
100
What time is shown on this clock?
4:07
100
How many students prefer hiphop music over other types of music?
60 students
100
Sarah has 6 vases. She puts 4 flowers in each vase. How many flowers did Sarah put in all of the vases?
Write a number model.
24 flowers.
Number model:
6 x 4 = 24
100
The difference between 35 and 15 is ______.
20
200
Round 122 to the nearest 10. Use a number grid.
120
200
Show the time 8:56 on a time clock.
200
Which class has the most girls?
Class 9 has the most girls.
200
Will has 4 boxes of crayons. Each box holds only 10 crayons each. How many crayons does Will have in all?
Write a number model.
40 crayons.
4 x 10= 40
200
The difference between 65 and 100 is ______.
35
300
Round 672 to the nearest 100. Draw a number line to help.
<--l------------------l---------------------l----->
___ ___ ___
700
<--l-----------------l---------l-------l-->
600 650 672 700
300
Elif starts practice at 2:05 pm and finishes at 2:50 pm. How long was practice? Show your work on an open number line and explain your work process.
45 minutes.
10 min 15 min 15 min 5 min
^ ^ ^ ^
<-l---------l----------l---------l----------l-->
2:05 2:15 2:30 2:45 2:50
OR
30 min 10 min 5 min
^ ^ ^
<-l------------l------------l---------l->
2:05 2:35 2:45 2:50
300
What is the difference in the number of students who are in class 4a versus class 5b?
class 4a- about 22 or 23 students
class 5b- 19 students
23-19 = 4 students
300
Daniel has 5 small packets of tissues. Each tissue packet holds 12 tissues. How many tissues does Daniel have all together?
Write a number model
60 tissues.
5 x 12 = 60
300
What is the difference between 77 and 45? _____
32
400
Fill in the number line below. Show where 73 would end up on the number line.
73 rounded to the nearest 10 is ______
<--l------------------l---------------------l----->
___ ___ ___
70
<--l--------l----------l----------------l-->
70 73 75 80
400
Emma's party begins at 2:00 pm and ends at 5:30 pm. How long was the party? Show your work on a time number line.
1 hour 1 hour 1 hour 30 minutes
^ ^ ^ ^
<l----------l-------------l--------------l------------l>
2:00 3:00 4:00 5:00 5:30
Emma's party was 3 hours and 30 minutes long.
400
What is the difference in the number of girls between classes 9 and 7?
The difference is 20 girls.
400
A classroom has 4 rows of chairs. Each row has 6 chairs. How many chairs are in all of the rows?
Write a number model.
24 chairs in total.
6 x 4 = 24
400
The difference between 86 and 119 is _____.
How did you get to your answer? Explain.
33
- I can go down 3 rows and over 3.
- I can count by ones.
- I can go over 3 and down 3 rows.
500
Round 42 and 37 to the nearest ten. Now add the numbers you have rounded. If 42 + 37 = 79, was your estimate reasonable?
40 and 40.
40 + 40 = 80,
yes my estimate was reasonable because the rounded numbers I added equalled 80 and 80 is 1 away from 79.
500
Dylan starts school at 8:25 am and finishes school at 3:15 pm. How long is her school day? Show your work.
8:25
9:25
10:25
11:25
12:25
1:25
2:25
--------------------> 2:30 (5 minutes added)
+ 3:00 (30 minutes added)
3:15 (15 minutes added)
_____________________
Dylan's school day lasts 6 hours and 50 minutes
500
List 5 different facts about this bar graph
1. 10 students read 1-5 books.
2. 8 students read 6-10 books.
3. The most amount of books that were read was 30.
4. 6 students read 11-15 books.
5. The least amount of students read 25-30 books.
500
Tyler has 3 boxes of rocks. Each box holds 6 rocks. If Tyler has 20 students in his class, can each student receive a rock? Explain.
Write a number model to help you.
No, every student cannot receive a rock because Tyler only has 18 rocks so there are not enough for the 20 students in his class.
3 x 6 = 18.
18 rocks.
500
The difference between 97 and 120 is ______.
Explain how you got to your answer.
23.
- I could have started at 97 then went down to rows and over 3.
- I could have counted by ones.
- I could have went over 3 and then down 2 rows.