Question

kboxes.
a. Take away 7 sets of 8 from 9 tens.
b. How many seconds are there in 2 hours?
seconds
c. 7.80 less than 17 = 5
d. 2 km 8 m =
m
e.
+ 239 = 645
f.
427 + 346 =
g. Take away 97 from 105
h. How many weeks are there in 49 days ? weeks
I. How many tens are there in 999
999?
j. Take away thirteen 7s from 180 ​

Answer 1

Answer:

b. 1 hour = 60 seconds..

So, 2 hour = 2X 60= 120 sec.

d. 1 km= 1000m..

So, 2km= 2000m..

And we have 8m separately.. So, We have to add 8m with 2000m..

Finally.. 2000+8= 2008m

h. 1 week = 7days...

So 49 days = 49/7

= 7 weeks...

Hope you are able to understand..

I can't solve other questions...Sry!