Day 1
Is telling time a form of math? Why?
Yes because we add or subtract the number of minutes it takes to get to a whole time
can we subtract 20 with 18 (20-18)? Explain why
Yes because the minuend 20 is greater than the subtrahend 18
is 71 > or < 72
<
Use mental math to calculate 27-10
17
What sign would I add in between 6+4 and 14-4?
What would the place value of the 2 in 4201 represent?
200
What is 71-27
44
If the pattern I have is 1,6,3,7,8,2,1,6,3,_,8,2
fill in the missing blank
7
Let's say I wanted to use mental math strategies for subrtaction, would I split both the minuend and subtrahend into smaller numbers?
No because we cannot subtract the minuend into smaller numbers due to subtraction not following the principle of order
137
What is the limit to the number of addends I can have?
Unlimited
Can we subtract the minuend from the subtrahend? Why?
No because the subtrahend is the smaller number and if you subtract the minuend from it you will get a negative value
State the pattern rule for the following sequence: 81, 72, 63, 54, 45
start at 81, subtract 9 each time
Why can we split up both addends when trying to use strategies for mental addition?
Because of the property of order
84+ 56 + 11
Split the 84 into 80+4
Split the 56 into 50+6
Split the 11 into 10+1
Add the numbers ending in 0 together (80+50+10=140)
Then add the ones (4+6+1=11)
140+11=151
what is 562+ 1903+ 234
2699
What is 734-87 and explain how you would check to see if you did this correct
647. You would add the difference with the subtrahend and if you did do it correct, then you should get the answer to be the minuend
What is wrong in this sequence?
2,9,16,24,31,38
24 should be 23 since we are adding by 7 each time
How would we represent the number 7421 using base ten blocks
7 one thousand blocks
4 one hundred blocks
2 tens block
1 ones block
Did you learn something new this week?
Yes and/or No
Solve the question: 23+108+318+461
910
In January, there were 2571 new born polar bears. These polar bears were large and white in colour. In February, there were 5812 new born polar bears. In March, 2381 got lost and could not be found since. How many polar bears are there remaining?
6002
What is the pattern rule for the following sequence?
4,2,6,4,8,6,10,8,12,10,14
Start at 4, subtract 2 each time for every even term but then add 4 for every odd term
How would we represent 7812 without using any thousands blocks?
We would have 78 hundreds blocks
one tens block
2 ones
What is 781+432-500+313
1026