√ 70 lies between two numbers that each
have one decimal place.
Work out these two numbers.

The decimal numbers where ✓70 lies between will be 8.3 and 8.4.

Firstly, in order to solve the question, we need to know the value of the square root of 70. This will be ✓70 = 8.36.

Based on the above values, it can be seen that the decimal numbers which 8.36 lies between will be 8.3 and 8.4. Therefore, the correct option is 8.3 and 8.4.

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8.3 and 8.4

Step-by-step explanation:

sqrt(70) will be in between 8 and 9, because 8^2 is 64 and 9^2 is 81, and 70 is in between these 2 numbers.

Now that we know that, we can test out the numbers between 8 and 9 whose square is closest to 70:

8.1^2 = 65.61

8.2^2=67.24

8.3^2 = 68.89

8.4^2 = 70.56

We know that sqrt(70) lies 8.3 and 8.4, because 70 is between 8.3^2 and 8.4^2

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