Вставь пропущенные числа.
Реши, как показано в образце.
Образец: 200 +100 = 2 сот. +1 сот. = 3 сот.
1000 – 100 = _______________________________
900 – 100 = ________________________________
900 +100 = _________________________________
400 +400 = _________________________________
500 +400 = _________________________________
800 – 200 = ________________________________
1000 – 800 = _______________________________
700 – 200 = ________________________________
700 +100 = _________________________________
300 +200 = _________________________________
400 – 100 = ________________________________
600 +300 = _________________________________
1000 – 500 = ______________________________
700 – 200 = ________________________________
600 – 100 = _______________________________
900 – 300 = ________________________________
200 +700 = _________________________________
500 +200 = _________________________________
900 – 100 = ________________________________
300 +300 = _________________________________
100 +200 = _________________________________
100 +300 = _________________________________
100 +400 = _________________________________
100 +500 = _________________________________
100 +600 = _________________________________
100 +700 =__________________________________
100 +800 = _________________________________
100 +900 = __________________________________
900 – 200 = _________________________________
800 – 200 = _________________________________
700 – 200 = __________________________________
600 – 200 = __________________________________
500 – 200 = __________________________________
300 – 200 = __________________________________
карандашом. Запиши числа в порядке возрастания.
200, 56, 62, 890, 99, 800, 231, 500, 3, 18, 990
____________________________________________________________________
Вычисли. Выполни проверку.
Пример: 78 – 76 = _________
Проверка: ________ +76 = 78
72 – 57 = ____________________
_______________________________
100 – 45 = ___________________
_______________________________
25 +18 = _____________________
_______________________________
74 +18 = _____________________
_______________________________
78 +22 = _____________________
_______________________________
12 +61 = _____________________
_______________________________
62 – 38 = ____________________
_______________________________
88 – 67 = ____________________
_______________________________
53 – 42 = ____________________
_______________________________
73 – 12 = ____________________
_______________________________
31 +15 = _____________________
______________________________
14 +42 = ____________________
______________________________
51 +15 = ____________________
______________________________
80 – 20 = ___________________
______________________________
13 – 10 = ___________________
______________________________
14 – 2 = _____________________
