This document appears to be a math worksheet that contains addition problems with integers. It asks the student to solve multiple addition problems involving positive and negative numbers. It then asks the student to write the letter of the problem that corresponds to the answer provided in a decoding section. The document contains two similar worksheets with different problems to solve.

1. Name:___________________________________ Date:_____________
Grade & Section:___________________________ Score:____________
Activity No. 1
Addition of Integers
A. Who was the first English mathematician who first used the modern
symbol of equality in 1557?
To get the answer, compute the sums of the given exercises below. Solve each problem. Write the
letter of the problem corresponding to the answer found in each box at the bottom.
A 25 + 95 = ________
R -65 + (-40)= ________
B 38 + (-15)= ________
C 30 + (-20) = ________
E 47 + 98 = ________
D 110 + (-75) = ________
R 165 + (-85) = ________
O -120 + (-35)= ________
E -75 + 20 = ________
R 65 + 75 = ________
O 45 + (-20) = ________
T 16 + (-38)= ________
R -65 + (-20) = ________
E 78 + (-15) = ________
Decoder
Name:___________________________________ Date:_____________
Grade & Section:___________________________ Score:____________
Activity No. 1
Addition of Integers
B. Who was the first English mathematician who first used the modern
symbol of equality in 1557?
To get the answer, compute the sums of the given exercises below. Solve each problem. Write the
letter of the problem corresponding to the answer found in each box at the bottom.
A 25 + 95 = ________
R -65 + (-40)= ________
B 38 + (-15)= ________
C 30 + (-20) = ________
E 47 + 98 = ________
D 110 + (-75) = ________
R 165 + (-85) = ________
O -120 + (-35)= ________
E -75 + 20 = ________
R 65 + 75 = ________
O 45 + (-20) = ________
T 16 + (-38)= ________
R -65 + (-20) = ________
E 78 + (-15) = ________
Decoder
-105 25 63 23 -85 -22 140 -55 10 -155 80 35 145
-105 25 63 23 -85 -22 140 -55 10 -155 80 35 145

2. B. Add the following:
1. 18 + (-11)+ 3 = ________
2. -9 + (-19)+ (-6) = ________
3. (-4) + 25 + (-15) = ________
4. 50 + (-13)+ (-12) = ________
5. -100 + 48+ 49 = ________
6. 12.24 + (-6.528)+ ( - 2.5) = _______
7. -3.24 + (9.72)+( - 17.9)= _______
8. 35 + (6.52)+ ( - 12.581)= _______
9. 2.45 + (-6.284)+ ( - 8.5) = _______
10. -1234 + (-148)+ (-498)= ________
B. Add the following:
1. 18 + (-11)+ 3 = ________
2. -9 + (-19)+ (-6) = ________
3. (-4) + 25 + (-15) = ________
4. 50 + (-13)+ (-12) = ________
5. -100 + 48+ 49 = ________
6. 12.24 + (-6.528)+ ( - 2.5) = _______
7. -3.24 + (9.72)+( - 17.9)= _______
8. 35 + (6.52)+ ( - 12.581)= _______
9. 2.45 + (-6.284)+ ( - 8.5) = _______

3. 10. -1234 + (-148)+ (-498)= ________