Welcome, math wizards! Today, we’re going to embark on an exciting adventure into the world of addition and subtraction. Are you ready to become addition and subtraction superheroes? We’ll use our powers to add up objects, count on our fingers, and subtract objects from our collection. We’ll use the power of numbers to solve problems and conquer challenges! So put on your math capes and get ready to blast off into a world of mathematical wonder. Let’s do this!
PLUS SIGN – The plus sign (+) is a symbol we use in math when we want to add two or more numbers together. It looks like a cross, like this: +.
ADDING WITH OBJECTS – We can use objects to help us understand addition. For example, if we have 2 toys and someone gives us 3 more toys, we can count them all to find the total number of toys we have. We say, “two toys plus three toys equals five toys.”
COUNTING ON – We can use counting on to help us add numbers. To add 2 + 3, we can start by counting 2, and then count on 3 more: “two, three, four, five.” So the answer is 5.
USING FINGERS – We can use our fingers to help us add numbers. For example, if we have to add 4 + 2, we can hold up four fingers on one hand and two fingers on the other hand. Then we can count all the fingers: “one, two, three, four, five, six.” So 4 + 2 = 6.
PRACTICE – The more we practice adding numbers, the easier it will become. We can practice with toys, counting on, or using our fingers.
MINUS SIGN – The minus sign (–) is a symbol we use in math when we want to subtract one number from another. It looks like a dash, like this: -.
SUBTRACTING WITH OBJECTS – We can use objects to help us understand subtraction. For example, if we have 5 marbles and we take away 2 marbles, we are left with 3 marbles. We say, “five marbles minus two marbles equals three marbles.” We can also write it as a number sentence: 5 – 2 = 3.
COUNTING BACK – We can use counting back to help us subtract numbers. To subtract 2 from 5, we start with 5 and count back 2: “five, four, three.” So the answer is 3.
USING FINGERS – We can use our fingers to help us subtract numbers. For example, if we have 7 fingers up and we want to subtract 3 fingers, we can put down 3 fingers: “seven, six, five, four.” So 7 – 3 = 4.
PRACTICE – The more we practice subtracting numbers, the easier it will become. We can practice with objects, counting back, or using our fingers.