Hi everyone,
Here's a Maths problem for today...
Mark brushes at least 2 times a day each day of the week.
How many times will he brush altogether in September?
Can you use a range of strategies to solve this maths problem?
Post your responses onto our blog...
This is from Room 7. Mrs Dawson's laptop is having a tantrum today so they cleverly emailed Ms T, so she could put their response onto the blog.
ReplyDeleteRoom 7 discovered today that they don't know how many days there are in each month of the year! So first of all, we had to work out how many days there are in September. We found this poem:
Thirty days hath September,
April, June and November;
February has twenty eight alone
All the rest have thirty-one
Except in Leap Year, that's the time
When February's Days are twenty-nine
SO now we know there are 30 days in September.
If Mark brushes his teeth twice a day, that is the same as saying 2 x 30, or 30 + 30.
The answer is (at least) 60. We say at least, because the problem says he brushes them at least twice a day.
Like Room 7, we didn't know how many days were in each month and listened to the poem that Mrs Ma'a-Clark recited.
ReplyDeleteIn one day Mark brushed his teeth at least twice a day and there are 30 days in September, so 2 x 30 = 60.
So our answer is Mark cleaned his teeth(at least) 60 times in September. Another strategy we used was we knew there are 3 tens in 30, so 2 x 10 = 20, 2 x 10 = 20, 2 x 10 = 20. 20 + 20 + 20 = 60. But this strategy took longer to work out.
We know that there are 30 days in September.
ReplyDelete3+3=6 so 30+30=60
Mark will brush his teeth 60 times in September
Room 10
hi Tataurangi
ReplyDeleteour anwser is 14 because in a week there is only 7 days so we used multiplycation which is 7x2=14
luarrell and angela room4