Question

Find the least whole number that can replace the question mark to make the statement true.
•? ÷7>800
•15<? ÷400

Answer 1

Answer:

• 1) 5,601

• 2) 6,001

Explanation:

Substitute the question mark with a variable name (x) and solve the inequalities:

1) x ÷ 7 > 800

• Multiply both sides by 7: x > 7 × 800

• Simlify: x > 5,600

The symbol > means greater than, then you want the least whole number that is greater than 5,600

• The least whole number than 5,600 is 5,601.

• Answer: 5,601.

2) 15 < x÷400

• Multiply both sides by 400: 400 × 15 < x

• Simplify: 6,000 < x

The symbol < means less than. You can invert the inequality to x > 6,000 which means that you are looking for the least whole number greater than 6,000.

• The least whole number greater than 6,000 is 6,001

• Answer: 6,001