Solve with Break Apart
12+25=
37
21+37=
58
12+13=
25
using base 10 blocks, breaking numbers into parts, and the "making 10" strategy
base 10 strategy
addend
the numbers added together for an addition problem
35+24=
59
34+21=
55
28+41=
69
break the numbers apart into tens and ones
break apart
regrouping
the process of changing groups of ones into tens or reorganizing place values to make it easier to perform operations like addition
28+37=
65
72+18=
90
26+55=
81
looking at a chart, you find your first addend. Then drop down however many 10's your second addend has. Then count over your ones.
100's chart
Sum
The answer for addition problems
68+37=
105
76+25=
101
20+24=
44
the process of changing groups of ones into tens or reorganizing place values to make it easier to perform operations like addition
Regrouping
Increase
get bigger
Mrs. Hazen had 34 pet fish. She got 21 more pet fish. How many pet fish did she have in all?
55 pet fish
Miss Heck spent 26 minutes grading papers on monday. She spents another 54 minutes on Tuesday. How many minutes in all?
80 minutes
76+17
93
The answer of an addition problem
sum
Inverse operation
opposite operations