问题
填空题
用合适的词填空
1. _____ + three = nine
2. four - _____= two
3. eight + one = _____
4. six - _____=
seven
5. six + _____ = seven
6. four + four = _____
7. one + _____ = one
8. five + one = _____
9. _____- three = four
10. two + _____= six
答案
1. six 2. tow 3. nine 4. five 5. one 6. eight 7. zero 8. six 9. seven 10. four