Rounding
Nearest 10:
457
460
4 x 80
320
Draw an array to show:
4 groups with 8 markers in each group
32
Share your strategy with another team!
458 + 239
697
Aiden put cookies into 8 bags. He had put 4 cookies into each bag. How many did he have total?
32
Nearest 10:
231
Nearest 100:
689
230 and 700
7 x 20
140
Draw me a picture for the equation:
6 groups with 7 watermelons in each group
42
Share your picture with another team!
803 - 538
265
Juan owns a hotdog stand. He made 18 hotdogs on Monday for Christifer and 9 the Tuesday for Kaitlin. How many did he make Monday and Tuesday?
27
Nearest 10:
569
Nearest 100:
845
570
and
800
5 x 30
150
Use the area model to show:
9 rows
5 columns
45
Did you count correctly?
387 + 326
USING A NUMBER LINE
713
At the store, Rain noticed there were rice krispy treats for sale. She wanted to make sure there were enough for our class of 24 students. She noticed there were 6 columns and 4 rows. Are there enough?
YES!
Nearest 10 and Nearest 100:
372
370 and 400
7 x 50
350
4 groups with 7 peaches in each group
5 groups with 5 kiwis in each group
28
and
25
SHARE YOUR STRATEGY
621 - 346
275
I wanted to buy some mini pumpkins. If I buy 6 pumpkins per week for 4 weeks. How many pumpkins will I have?
24
Nearest 10 and 100:
764
760 and 800
8 x 30
and
4 x 60
240
and
240
HA!
SOLVE IT using TWO strategies!
4 x 9
5 x 8
3 x 6
36
40
18
TWO PROBLEMS
438 + 295
709 - 582
TWO STRATEGIES (Number Line & Partial for both equations)
733
and
127
Jacob thought it would be nice to buy Halloween costumes for his family. He wanted them to have a lot of options so on Monday he bought 6 costumes, on Tuesday he bought 4 costumes, on Wednesday he bought 8 costumes, and on Thursday and Friday he bought 3 more costumes. How many did he buy altogether?
21