Mike is adding 145 and 237. His work is shown. How can Mike find the sum? Regroup 70 as 7 ones. The sum is 319. Regroup 70 as 7 ones. The sum is 389. 145 → 100 + 40 + 5 +237 200 + 30 + 7 300 + 70 + 12 Regroup 12 into lten and 2 ones. The sum is 382. Regroup 12 into 1 ten and 2 ones. The sum is 372.

b

step-by-step explanation:

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

d

step-by-step explanation: