Round to the nearest 10
Round 56 to the nearest ten
60
Round 572 to the nearest hundred
600
Use rounding then add:
47 + 23 =
50 + 25 = 75
Write the commutative property
8+9=17
Is the sum even or odd?
9+8=17
odd
Tom counts by tens. Write the number that Tom will say next. 240, 250, 260, 270, _______
280
Round 23 to the nearest ten
20
Round 202 to the nearest hundred
200
Use rounding then add:
303+ 493 =
300+500= 800
Is the sum even or odd?
6+4=
10
even
Select the numbers that round to 700 when rounded to the nearest hundred. Mark all that apply.
a)663
b)771
c)699
d)643
663
699
Round 45 to the nearest ten
50
Round 657 to the nearest hundred
700
Use rounding then add:
66 + 22 =
70+20=90
Sally writes 6+7= 13 on the board. Lara wants to use the commutative property of addition to write Sally's addition sentence. what number sentence should Lara write ?
7+6=13
Is the sum Even or Odd? Write Even or Odd.
5 + 6 _______________
odd
round 829 to the nearest ten
830
Round 548 to the nearest hundred
500
Use rounding then add:
221+202=
200+200=400
Find the sum, Then use the commutative property pf addition to write the related addition sentence.
10+5=
10+5=15
commutative property of addition
5+10=15
Estimate the Sum. Show Your working.
235
+
372
-------
200+400 =600
Round 663 to the nearest ten
660
Round 372 to the nearest hundred
400
Use rounding then add:
86+33=
90+30=120
Sara writes a number sentence that shows the Identity Property of Addition. Which could be Mariam’s number sentence?
a) (13 + ) + 2 = 13 + (6 + 2)
b)9 + 0 = 9
c)12 + 3 = 3 +12
d)5 + 7 = 12
9 + 0 = 9
What related number sentence shows the Commutative Property of Addition?
4+ 16 = 20
_________________________
16+4=20