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McGraw-Hill Math Grade 7 Answer Key Lesson 1.2 Adding and Subtracting Whole Numbers
Exercises Add or Subtract
Question 1.
Answer: 12
By adding 7 and 5 we get 12.
Question 2.
Answer: 110
By adding 33 and 77 is 110.
Question 3.
Answer: 2121
By adding 21 and 2100 is 2121.
Question 4.
Answer: 88
By subtracting 100 and 22 is 88.
Question 5.
Answer: 1222
By adding three given numbers 1100, 111, and 11 we get 1222.
Question 6.
Answer: 99
By subtracting 155 and 56 we get 99.
Question 7.
Answer: 167
By adding 122, 35, and 10 we get 167.
Question 8.
Answer: 550
By adding 45, 450, and 55 we get 550.
Question 9.
Answer: 24
By subtracting 213 from 237 we get 24.
Question 10.
Answer: 898
By subtracting 311 and 1209 we get 898.
Question 11.
Answer: 69
By subtracting 78 from 167 we get 69.
Question 12.
Answer: 692
By subtracting 2764 from 3456 we get 692.
Question 13.
Answer: 997655
By subtracting 2345 from 1000000 we get 997655.
Question 14.
Answer: 98
By subtracting 113 from 211 is 48.
Question 15.
Answer: 5678
By adding 5151 and 527 we get 5678.
Question 16.
Answer: 9310
By adding 8932 and 378 is 9310.
Question 17.
Answer: 382
By adding 33, 333, 3, and 13 we get 382.
Question 18.
Answer: 955
By adding the three given numbers 595, 25 and 335 we get 955.
Question 19.
Answer: 917
By subtracting 444 from 1361 we get 917.
Question 20.
Answer: 3649
By adding three numbers 415, 3001 and 233 we get 3649.
Question 21.
Answer: 1109
By subtracting 3333 from 4442 we get 1109.
Question 22.
Answer: 421
By adding 34, 344 and 43 we get 421.
Question 23.
Answer: 1002
By subtracting 999 from 2001 we get 1002.
Question 24.
Answer: 610
By adding 44, 555 and 11 we get 610.
Question 25.
Answer: 858
By adding 48, 49 and 761 we get 858.
Question 26.
Answer: 82
By subtracting 1729 from 1811 we get 82.
Question 27.
Answer: 172
By adding 10, 11, 12, 13, 15 and 111 we get 172.
Question 28.
Answer: 180
By subtracting 49 from 229 we get 180.
Question 29.
Answer: 5098
By subtracting 790 from 5888 we get 5098.
Question 30.
Answer: 1889
By adding 544, 322, and 1023 we get 1889.
Question 31.
Answer: 1112
By subtracting 8888 from 10000 we get 1112.
Question 32.
Answer: 1332
By adding 1010, 11 and 311 we get 1332.
Question 33.
Answer: 589
By adding 212, 355 and 22 we get 589.
Question 34.
Answer: 13
By subtracting 988 from 1001 we get 13.
Question 35.
Answer: 1514
By adding 5, 1055 and 454 we get 1514.
Question 36.
Answer: 2876
By subtracting 4567 from 7443 we get 5876.