Doubles or Near Doubles
What is 6 + 6?
12
Which number is greater: 42 or 24? Why?
42 because it has 4 tens, while 24 only has 2 tens
What is 30 + 40?
70
There were 12 birds on a fence. 4 flew away. How many are left?
12 - 4 = 8 birds
How many sides does a hexagon have?
6 sides
What is 7 + 8?
15
7 + 7 = 14 and 1 more makes 15
Put in order from least to greatest:
78, 87, 80, 70
70, 78, 80, 87
What is 45 + 10?
55
Kai had some marbles. He found 6 more and now has 15. How many did he start with?
__ + 6 = 15
15 - 6 = 9 marbles
If you cut a circle into 2 equal parts, what is each part called?
A half
Which doubles fact helps you solve 5 + 6? What is the answer?
5+5=10
so
5+6=11
Write the correct symbol: 99 ___ 100
99 < 100
What is 36 + 20?
56
There are 8 kids on the swings and 9 kids on the slide. How many kids are on the playground?
8 + 9 = __
8 + 2 + 7 = ___
10 + 7 = 17 kids
A square is cut into 4 equal parts. What is each part called? What fraction of the whole is it?
A fourth or a Quarter
Fill in the blank:
8 + ___ = double 8 – 1.
What is the missing number?
Double 8 is 16
16 - 1 = 15
so 8 + 7 = 15
I am a two-digit number. I am greater than 54 and less than 58. My ones digit is even. What numbers could I be?
56
What is 47 + 8?
Show how you would break apart 8 to solve.
47 + 8 =
47 + 3 + 5 =
50 + 5 = 55
A bag had 20 grapes. Priya ate some. There are 11 left. How many did Priya eat? Write an equation.
20 - ___ = 11
20 - 11 = 9 grapes
Which has smaller equal shares — a pizza cut into 2 pieces or the same pizza cut into 4 pieces? Why?
4 pieces — more parts means each share is smaller.
DAILY DOUBLE
Emma says: 'I know 9+9=18, so 9+8 must be 17 AND 8+9 must also be 17.'
Is she right? Explain your thinking
Yes!
9+8 =17
So 9+9−1 = 17.
8+9 = 9+8 (Addends are just switched)
Lena has 7 tens and 3 ones. Marcus has 6 tens and 13 ones. Who has more? Explain.
They are equal!
7 tens (70) + 3 ones =73
6 tens (60) + 13 ones = 73
Class A collected 38 cans and Class B collected 25 cans. How many total? Explain two different strategies you could use.
Strategy 1: tens and ones
30+20=50 / 8+5=13 / 50+13=63
Strategy 2: make a ten
38+2=40 / 40+23=63
Sam scored 14 points in a game. He scored 6 more than Zoe. How many points did they score together? Show your work.
Zoe's score: 14 - 6 = 8 points
Together: 14 + 8 = 22 points
A rectangle is cut into halves two different ways. Are the halves the same shape each time? Are they still equal shares? Explain.
They can be different shapes.
It can be 2 tall rectangles or 2 wide rectangles, but they are always equal shares.