Solve this problem using an open number line:
13 + 43 =
56
100
Is 19 an odd or even number? Draw or explain with words.
Odd.
If there were 19 objects, 1 of them would not have a pair.
100
Romy has 23 pogs and 44 cars. How many toys does Romy have altogether?
Include: Number sentence, strategy, and answer with unit.
67 toys
100
Solve mentally:
9 + 7 =
16
200
Draw 710 using base ten blocks.
7 hundreds, 1 ten, 0 ones
200
Solve this problem using an open number line:
56 - 24 =
32
200
Is 11 an odd or even number? Draw or explain with words.
Odd.
If there were 11 objects, 1 object would not have a pair.
200
Tammy has a few marbles. During a game she won 34 more marbles. Now Tammy is happy because she has 89 marbles. How many marbles did Tammy start off with?
Include: number sentence, strategy, and answer with unit.
55 marbles
200
Solve mentally:
19 + 5
24
300
What number is this?
200 + 0 + 9
209
300
Solve this problem using an open number line:
19 + 55 =
74
300
Does this picture show an odd or even number? Draw or explain with words.
* * * * * * * * *
* * * * * * *
The picture shows the number 16 which is even.
Student may draw or explain that all of the objects have pairs.
300
Kim made a batch of 36 cookies. Later on, she made more cookies to bring to her class. Altogether, she made 92 cookies. How many more cookies did Kim make?
Include: number sentence, strategy, and answer with unit.
56 cookies
300
Solve mentally:
52 + 40 =
92
400
What number is this?
0 ones, 3 tens, 4 hundreds
430
400
Solve this problem using an open number line:
61 - 32 =
29
400
Does this picture show an odd or even number? Draw or explain with words.
* * * * * * * *
* * * *
The picture shows 12 objects which is an even number. Student may draw or explain that all objects in the picture will have a pair.
400
Danny has 38 socks. 22 of them are black. The rest of the socks are white. How many white socks does Danny have?
Include: number sentence, strategy, and answer with unit.
16 white socks
400
Solve mentally:
75 + 30
105
500
Draw 132 using only tens and ones.
13 tens and 2 ones
500
Solve this problem using an open number line:
___ + 45 = 83
38
500
Write a number sentence to represent this picture:
* * * * * * * + * * * * * * *
Is the result an odd or even number?
7 + 7 = 14
14 is an even number because all of the objects will have a pair (student may draw or explain with words).
500
Donald has 13 red marbles and 22 blue marbles. Sara has 11 orange marbles. Craig has 33 multi-colored marbles. How many marbles do they have altogether?
Include: strategy and answer with unit.