abacus

Front

What is the sum of 27, 79, 92, 28, and 81?

Back

307

Front

What is the sum of 23, 78, 51, 36, and 57?

Back

245

Front

What is the sum of 44, 66, 94, 34, and 29?

Back

267

Front

What is the sum of 72, 97, -67, 89, and -11?

Back

180

Front

What is the result of the operation: 11 + 77 - 73 + 84 - 52?

Back

47

Front

What is the sum of the following numbers: 4 4 3 2 1 3 3 2 6 2?

Back

30

Front

5 1 5 6 3 2 3 9 2 4

Back

40

Front

What is the sum of the following numbers: 8 5 4 5 1 6 7 8 2 1?

Back

47

Front

What is the sum of the following numbers: 5 7 2 6 6 7 9 7 5 8?

Back

62

Front

7 5 9 5 1 9 9 1 8 2

Back

56