Addition and
Subtraction
Subtraction
Tom had 35 apples, and he gave away 12 apples to his friends. How many apples does Tom have now?
23 apples.
Jack wants to measure the length of his pencil. Which tool should he use for measuring the pencil's length?
Ruler
Add the following numbers: 23 + 15.
38
Draw a triangle.
Picture of a triangle.
Count the objects in the group: ● ● ● ● ● ● ●. Is the number of objects odd or even?
Even
Emily wants to buy a toy that costs $15. She has already saved $8. How much more money does Emily need to buy the toy?
$7
Lisa measured the length of a book using both inches and centimeters. She got 8 inches and 20 centimeters. Which unit measurement is longer, inches or centimeters?
Inches
Solve the following addition problem using the base 10 strategy: 312 + 125.
437
Draw a square.
A drawing of a square with four equal sides and four right angles.
Create a rectangular array with 3 rows and 4 columns. How many objects are there in total?
12
Mary has 47 marbles, and her friend Jane has 62 marbles. How many more marbles does Jane have than Mary?
15 marbles.
Sarah wants to estimate the length of her classroom's whiteboard. Would it be best to estimate the length in inches, feet, centimeters, or meters?
meters
What is 10 more than 56?
66
Draw a circle and divide it into two equal shares. Shade one of the shares.
A drawing of a circle divided into two equal parts, with one part shaded.
Draw a rectangular array with 2 rows and 5 columns. How many objects are there in total?
10
Sarah has 3 quarters, 4 dimes, and 5 nickels in her piggy bank. How much money does she have in total?
$1.15
The length of a rope is 85 centimeters, and another rope is 45 centimeters. What is the total length of the two ropes combined?
130 centimeters
Explain how you can use the "making tens" strategy to solve the addition problem: 37 + 9.
The "making tens" strategy involves breaking one of the addends into tens and ones to simplify the addition. In this case, we break 9 into 3 and 6, and then add the 3 to 37, which gives us 40.
Draw a rectangle and divide it into 4 equal rows and 3 equal columns. How many squares are there in total?
12 squares
Count the objects in the group: ● ● ● ● ● ● ● ● ●. Is the number of objects odd or even?
Odd
In a class, the teacher asked students about their favorite colors. The results are as follows: 8 students like blue, 5 students like red, 3 students like green, and 7 students like yellow. Which color is the most popular among the students?
Among the given colors, "blue" is the most popular as it has the highest number of students (8) who like it.
Emily measured the length of a book using both inches and centimeters. She got 12 inches and 30 centimeters. Which unit measurement is longer, inches or centimeters?
12 inches is longer than 30 centimeters.
Using the base 10 strategy, add the following numbers: 28 + 15 + 7.
50
In a class, the teacher asked students about their favorite fruits, and the results are as follows: 8 students like apples, 5 students like bananas, 4 students like oranges, and 7 students like grapes. Create a picture graph representing the data.
Picture graph representation with appropriate pictures for each fruit and corresponding quantities.
In a class, the teacher asked students about their favorite sports, and the results are as follows: 6 students like soccer, 4 students like basketball, 3 students like swimming, and 7 students like tennis. Create a bar graph representing the data.
Bar graph representation with appropriate bars for each sport and corresponding quantities.