5. Rechne aus. Du kannst Stellenwertkarten oder eine Stellenwerttabelle benutzen. \( \begin{array}{ll}\text { a } 0.975-0.9= & \text { b } 0.468-0.4= \\ 0.975-0.07= & 0.468-0.06= \\ 0.975-0.005= & 0.468-0.008=\end{array} \)

Diapers cast \$4/ prekage. How many prokeges did Mark buy if he spent \$16?

b. La compañía telefónica ha utilizado \( \frac{3}{4} \) de un rollo de cable de 800 m durante la primera mitad del año. ¿Cuántos metros de cable de ese rollo le queda disponible para el resto del año?

The resting heart rate \( \left(H R_{\text {rest }}\right) \) is the number of times a heart beats per minute \( (\mathrm{bpm}) \). An average person's \( H R_{\text {rest }} \) is \( 60-90 \mathrm{bpm} \). Problems can result when a person's \( H R_{\text {rest }} \) is below 60 bpm or above 100 bmp . However, professional athletes and meditators can have \( H R_{\text {rest }} \) as low as 40 bpm due to their hearts' ability to pump blood efficiently. As of 2012 , the world's lowest verified \( H R_{\text {rest }} \) was 27 bpm for Martin Brady of the \( U K \). \( H R_{\text {rest }} \) is rarely found by checking a person's pulse for a full minute. More commonly, the pulse is measured for \( 5,6,10,12 \) or 15 seconds and then multiplied by the appropriate factor of 60 . Question 1 If you were to check Martin Brady's pulse for 5 seconds, how many beats would you expect to count? (assuming his world record rate)

Select all the perfect squares. - \( \sqrt{361} \) - \( \sqrt{224} \) - \( \sqrt{81} \) \( \sqrt{2} \) \( \sqrt{1} \)

5. The value of the equation is closest to which of the following? \( \frac{873.5 \times 4.72}{59.6} \) A. 75,000 B. 7,500 C. 750 D. 75