Работа 1. Табличное сложение и вычитание чисел в пределах 20
Страница 6 – 7
Вариант 1
Задание 1 .
1) 7 + 5 = 7 + 3 + 2 = 12
2) 9 + 7 = 9 + 1 + 6 = 16
3) 11 – 2 = 11 -1 – 1 = 9
4) 12 – 4 = 12 – 2 – 2 = 8
5) 8 + 3 = 8 + 2 + 1 = 11
6) 7+ 6 = 7 + 3 + 3 = 13

7) 14 – 7 = 14 – 4 – 3 = 7
8) 15 – 8 = 15 – 5 – 3 = 7
9) 5 + 9 = 5 + 5 + 4 = 14
10) 6 + 8 = 6 + 4 + 4 = 14
11) 13 – 9 = 13 – 3 = 6 = 4
12) 16 – 7 = 16 – 6 – 1 = 9

Задание 2.
13) 4 + 5 + □ = 11
9 + □ = 11 (11 – 9 = 2)
9 + 2 = 11
4 + 5 + 2 = 11

14) □ – 7 – 5 = 2
□ – (7 + 5) = 2
□ – 12 = 2 (2 + 12 = 14)
14 – 12 = 2
14 – 7 – 5 = 2

Вариант 2.
Задание 1.
1) 7 + 4 = 7 + 3 + 1 = 11
2) 5 + 8 = 5+ 5 + 3 = 13
3) 11 – 5 = 11 – 1 – 4 = 6
4) 13 – 7 = 13 – 3 – 4 = 6
5) 9 + 3 = 9 + 1 + 2 = 12
6) 7 + 9 = 7 + 3 + 6 = 16

7) 12 – 8 = 12 – 2 – 6 = 4
8) 15 – 6 = 15 – 5 – 1 = 9
9) 7 + 3 = 10
10). 5 + 7 = 5 + 5 + 2 = 12
11) 14 – 9 = 14 – 4 – 5 = 5
12) 17 – 8 = 17 – 7 – 1 = 9

Задание 2.
13)
3 + 4 + □ = 13
7 + □ = 13 (13 – 7 = 6)
7 + 6 = 13
3 + 4 + 6 = 13

14)
□ – 8 – 4 = 5
□ – (8 + 4) = 5
□ – 12 = 5 (5 + 12 = 17)
17 – 12 = 5
17 – 8 – 4 = 5