Adding Three Numbers — Answer Key
Part A: Trace the Words
Trace each word carefully by following the dotted lines.
1. make
2. ten
3. pair
4. then
5. equal
6. find
Part B: Fill in the Blank
Write the missing word or number on each line.
1. 0 + 4 + 5 = 9
0+4=4, then 4+5=9.
2. 3 + 0 + 6 = 9
3+6=9 and zero adds 0.
3. 2 + 2 + 5 = 9
2+2=4, then 4+5=9.
4. 4 + 4 + 1 = 9
4+4=8, then 8+1=9.
Part C: True or False?
Read each statement. Circle True or False.
1. 5 + 0 + 3 equals 8.
True False
5+3=8 and 0 adds nothing.
2. 2 + 2 + 4 equals 10.
True False
2+2=4, then 4+4=8, not 10.
3. 3 + 3 + 3 equals 9.
True False
3+3=6, then 6+3=9.