Page 21 - NUMINO Challenge_B2

Type 2-1 Number of Consecutive Numbers

Look at the box below. Which number is the greatest?

The number of consecutive numbers from 30 to 120.
The number of consecutive even numbers from 200 to 400.
The number of consecutive odd numbers from 1 to 200.

1 The smallest number of consecutive numbers is called the first number, and
the greatest number is called the last number. Fill in the blanks to
complete the equation and find the number of consecutive numbers.

Number of Consecutive Numbers 1

2 Find the number of consecutive numbers from 30 to 120.

3 The consecutive even numbers from 200 to 400 are 200, 202, 204, 206 ...
398, and 400. How many times must 2 be added to 200 to get 400? Use
the result to find the number of consecutive even numbers from 200 to
400.

4 The consecutive odd numbers from 1 to 200 are 1, 3, 5, 7, 9 ... 195, 197,
and 199. Find the number of consecutive odd numbers from 1 to 200.

5 Among , , and , which is the greatest?

18 NUMINO Challenge B2