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Adding and Subtracting Numbers up to 10: Very Difficult Problems with Solutions

Problem 1

1 + 2 + 4 =

Solution:
1 + 2 + 4 = 3 + 4 = 7

Problem 2

1 + 3 - 2 =

Solution:
1 + 3 - 2 = 4 - 2 = 2

Problem 3

10 - 2 - 5 =

Solution:
10 - 2 - 5 = 8 - 5 = 3

Problem 4

1 + 4 + 2 =

Solution:
1 + 4 + 2 = 5 + 2 = 7

Problem 5

7 - 4 - 2 =

Solution:
7 - 4 - 2 = 3 - 2 = 1

Problem 6

3 + 5 + 1 =

Solution:
3 + 5 + 1 = 8 + 1 = 9

Problem 7

8 - 5 + 3 =

Solution:
8 - 5 + 3 = 3 + 3 = 6

Problem 8

4 + 4 - 3 =

Solution:
4 + 4 - 3 = 8 - 3 = 5

Problem 9

7 - 3 + 4 =

Solution:
7 - 3 + 4 = 4 + 4 = 8

Problem 10

2 + 5 - 1 =

Solution:
2 + 5 - 1 = 2 + 4 = 6

Problem 11

How many triangles are in the picture?

Solution:
The triangles are 4.

Problem 12

How many triangles are in the picture?

Solution:
The triangles are 5.

Problem 13

4 + 4 + 2 =

Solution:
4 + 4 + 2 = 8 + 2 = 10

Problem 14

10 - 4 - 5 =

Solution:
10 - 4 - 5 = 6 - 5 = 1

Problem 15

♥ + ♥ = 6
♥ + ♣ = 7
♣ =

Solution:
♥ + ♥ = 6
3 + 3 = 6 so ♥ = 3
3 + ♣ = 7
♣ = 4

Easy

Normal

Difficult