Question

The numbers for big canals have more than $6$ Tens and less than $8$ Tens, and the small canals have more than $7$ Ones and less than $9$ Ones. Which of the following options gives the place value and the face value of the total number of canals?

• A. Place value: $6$ Tens and $7$ Ones, Face value: $6$ and $7$
• B. Place value: $6$ Tens and $7$ Ones, Face value: $8$ and $9$
• C. Place value: $8$ Tens and $9$ Ones, Face value: $8$ and $9$
• D. Place value: $7$ Tens and $8$ Ones, Face value: $7$ and $8$

Answer 1

The correct option is D Place value: $7$ Tens and $8$ Ones, Face value: $7$ and $8$

The number of big canals is more than $6$ Tens and less than $8$ Tens; therefore, the number is $7$ Tens, i.e., $70$.
The number of small canals is more than $7$ Ones and less than $9$ Ones; therefore, the number is $8$ Ones, i.e., $8$.
Therefore, the total number of canals $=70+8.$



Hence, Option C is correct.