Vocabulary:
Solving math problems:
| 解決；解答 | 問題 |
a. Read.
1.
Addition: 
加法
1 + 1 = 2
one plus one equals two
2.
Subtraction:
減法
2 − 1 = 1
two minus one equals one
3.
Multiplication:
乘法
2 × 2 = 4
two times two equals four
4.
Division:
除法
4 ÷ 2 = 2
four divided (分開；除) by two equals two
b. Write in words:
1.
12 + 20 = 32
twelve plus twenty
equals thirty-two
2.
50 − 10 = 40
fifty minus ten
equals forty
3.
10 × 8 = 80
ten times eight
equals eighty
4.
30 ÷ 6 = 5
thirty divided by six
equals five