Odd/Even
Tell me all the odd and even numbers 0-10
Even-0,2,4,6,8
Odd -1,3,5,7,9
Decompose 343
300-40-3
If adding when you adjust do you do the same to both sides or opposites?
Opposites
Round 26 to the nearest 10
30
529+407=______ +529
fill in the blank
407
126+154=?
Is the ones place odds or even?
Even
Decompose and subtract (Show work)
340-210=?
340-200=140
140-10=130
130
When subtracting do you do the same to both sides or opposites?
Same to both sides.
Round 345 to the nearest hundred
300
There was a bake sale the class sold:
Monday:58
Tuesday:67
Wednesday:42
What equation can you make to show how much they sold in all?
58+67+42=?
164-183=
Is the tens place odds or even?
Even
Decompose and add 223+354=
Hundreds=
Tens=
ones=
add all together
200+300=500
20+50=70
3+4=7
total 577
139+216=
Adjust and answer
140+215=355
+1 -1
Jacob and Alli both rounded the number 78
Jacob got 80
Alli got 100
Who is correct?
Both students are correct!
Add this equation:
157+17+783=?
957
899+872= odd or even?
odd
There is 365 days in a year. The baby is two years old. How many days has the baby been here? (Decompose)
365+300=665
665+50=715
725+5=730
491-226=
Adjust and answer
490-225= 265
-1 -1
A number rounded to the nearest 10 is 240 what number could it be?
235-244
If our class has 345 pencils and another class has 490 pencils. About how many would they have all together?
800 or 840 depends if you round to 100s or 10s place.
My class was selling pencils. We had two shipments of pencils come in one was 435 pencils and the other was 237 pencils. The students the tried to sell as many as they could and sold 533 pencils. How many pencils are left and is it an odd or even number?
139 Odd
Sarah decomposed she had 701+219 She did:
219+700=919
919+1=920
Did she do this correctly? How do you know?
Yes- she started with the 2nd number and decomposed the first.
Melissa and Juan are finding 129+257=? by adjusting.
Melissa solves using 130+258=?
Juan solves using 130+256=?
Who is correct and what should the answer be?
386 and Juan is correct
Jack is making a fruit salad. He puts in 9 strawberries, 25 orange wedges, 19 kiwi slices, 27 blue berries, 16 grapes, and 21 raspberries. Which fruits does he use about 20 of?
grapes/raspberries/kiwi
What is the name of the largest planet in the solar system?
Jupiter