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TitleСкладываем и вычитаем без калькулятора -  Тест из 15 примеров для тренировки вашего мозгаTitle
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<strong>  55 + 555 - 75 = ...</strong>
535
530
455
535
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<strong>  234 + 432 - 23 + 43 = ...</strong>
886
868
686
686
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<strong>  7887 + 8778 = ...</strong>
16 665
17 887
18 877
16 665
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<strong>  412 + 412 - 214 = ...</strong>
620
610
632
610
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<strong>  575 + 576 + 577 = ...</strong>
1728
1725
1628
1728
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<strong>  7878 - 87 - 78 = ...</strong>
7777
7487
7713
7713
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<strong>  44 - 33 + 22 - 11 = ...</strong>
22
33
44
22
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<strong>  152 - 11 - 141 = ...</strong>
2
1
0
0
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<strong>  1111 - 2222 + 3333 - 15 = ...</strong>
122
2207
1112
2207
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<strong>  17 + 17 + 17 = ...</strong>
47
57
51
51
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<strong>  789 - 456 - 123 + 2 = ...</strong>
314
212
217
212
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<strong>  1 + 2 + 3 + 4 - 3 - 2 + 1 = ...</strong>
6
5
4
6
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<strong>  15 + 15 - 16 + 15 = ...</strong>
25
27
29
29
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<strong>  33333 - 2222 - 111 = ...</strong>
31000
32000
33000
31000
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<strong>  18 + 81 = ...</strong>
98
99
100
99
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