Question

1. maintain accuracy which statements describe the difference of 134.6 and 78.9? the difference is 55.7. the difference is greater than 55. the difference is less than 55.07. 12. dig deeper find the missing digits. 45.□ - 9.3 = □5.8 13. model real life which record is longer? how much longer? world’s longest fingernail records category length (cm) single hand 909.60 pair of female hands 576.41

Explanation:

11.

Step1: Calculate the difference

$134.6 - 78.9=55.7$

Step2: Analyze the statements

Since the difference is 55.7, it is greater than 55 and not less than 55.07.

Step1: Analyze the subtraction of the tenths - place

Let the missing digit in the tenths - place of the minuend be $x$. We know that $x - 3$ gives 8. Since $11-3 = 8$, $x = 1$ (with a borrow from the ones - place).

Step2: Analyze the subtraction of the ones - place

After borrowing 1 from the ones - place of 5 in the minuend, we have $4 - 9$ in the ones - place subtraction. To get a non - negative result, we must have borrowed from the tens - place. So the result in the ones - place is 5. And the number in the tens - place of the result is 3.

Step1: Compare the lengths

Compare 909.60 and 576.41. Since $909.60>576.41$, the single - hand record is longer.

Step2: Calculate the difference

$909.60−576.41 = 333.19$

Answer:

The difference is 55.7; The difference is greater than 55.

12.