Ⅰ.（跨学科·数学）算一算，写出得数。
1. Six and six makes .
2. Three fives are .
3. Seven and seven makes .
4. Ten and nine makes .
5. Two eights are .

1. twelve 2. fifteen 3. fourteen 4. nineteen 5. sixteen

Ⅱ. 读一读，选择合适的应答语，并在方框内画“√”。
How many books do we need?
□ We need fifteen books.
□ We have thirteen books.
□ We need twelve books.
How many pencils do you have?

□ We need eleven pencils.
□ We have twelve pencils.
□ We have fifteen pencils.
How many boxes do we need?
□ We have one box.
□ We need two boxes.
□ We need three boxes.

1. ☑We need fifteen books. 2. ☑We have twelve pencils. 3. ☑We need three boxes.