Open Number Line
Use an open number line to solve:
45 + 22 =
67
Break apart 10s and 1s and then combine:
32 + 43 =
75
Build a landmark number (make a 10):
16 + 7 =
23
Line up the place values to solve:
45+ 12
57
Write the number in EXPANDED FORM:
4,872
4,000 + 800 + 70 + 2
Use an open number line to solve:
12 + 29 =
41
Break apart 10s and 1s and then combine:
74 + 21 =
95
Build a landmark number (make a 10):
26+ 14 =
40
Line up the place values to solve:
57 + 42
99
Order the numbers from least to greatest:
342, 554, 354, 573, 123, 654, 645
123, 342, 354, 554, 573, 645, 654
Use an open number line to solve:
56 + 32
88
Break apart 100s, 10s, and 1s and then combine:
233 + 456 =
689
Build a landmark number (make a 10):
8 + 48 =
56
Line up the place values to solve:
452 + 327
779
North America, South America, Europe, Asia, Antarctica, Africa, Australia
Use an open number line to solve:
87 + 24 =
111
Break apart 100s, 10s, and 1s and then combine:
648 + 241 =
889
Build a landmark number (make a 10):
74 + 37 =
111
Line up the place values to solve:
2,433 + 3,526
5,959
If the Rangers score 65 goals total by the end of 2022 and they score 72 more goals by the end of April, how many total goals will they have scored?
137
Use an open number line to solve:
145 + 57 =
204
Break apart 100s, 10s, and 1s and then combine:
742 + 335 =
1,077
Build a landmark number (make a 10):
346 + 24 =
370
Line up the place values to solve:
43,245 + 5,122
48,367
Pedro was collecting baseball cards. He collected 67 cards in one month. However, he lost 23 of them. How many does he have left?
44