问题
填空题
完成下列算式。
1. ten - four = __________ . 2. one + seven = ___________.
3. seven - three = __________. 4. eight + two = __________.
5. nine - four = __________ . 6. six + one = ___________ .
7. four - two = __________ . 8. ten - seven = __________.
9.five + four = _________ . 10. three - two = ___________ .
答案
1. six 2. eight 3. four 4. ten 5. five
6. seven 7. two 8. three 9. nine 10. one
