Addition & Subtraction Math Olympiad Addition & Subtraction 1st Grade Name: ___________________

Number Sense Fewer to More Players Count the number of baseball players. There are _______ baseball players. Count the number of baseball gloves. There are ________ baseball gloves. Count the number of baseball hats. There are ________ baseball hats. Gloves Hats Circle which item has the most items pictured above. Players Gloves Hats

Number Sense Pictures & Numbers Count the number of items in each set. Write the number on the line and create an addition sentence with the numbers. There are chef hats. There are cowboy hats. + = My number sentence would be: There are total hats.

Number Sense Pictures & Numbers Count the number of items in each set. Write the number on the line and create an addition sentence with the numbers. There are top hats. There are birthday hats. + = My number sentence would be: There are total hats.

Number Sense Pictures & Numbers Make a number sentence with the pictures below. = + + =

Number Sense Dominoes Use the dominoes pictured to create number sentences.

Number Sense Pictures & Numbers Make a number sentence with the pictures below. + = + =

Number Sense Greater than, Equal to, Less than Think about Pac Man wanting to eat the larger number. Use the symbols to write if the number on the left is greater than ( > ), equal to ( = ), or less than ( < ) the number on the right. ________ 8 10 ________ 10 11 ________ 12 12 ________ 12 25 ________ 30 100 ________ 45 30 ________ 40 15 ________ 12 55 ________ 56 4 ________ 5 19 ________ 20 22 ________ 66 100 ________ 101

Picture It! Sam read 8 books. Tim read 1 more book than Sam. Lyn read 3 fewer books than Tim. How many books each did Tim and Lyn read? Tim read _________ books. Lyn read _________ books Draw a picture to show what each child read.

Number Sense Missing Numbers Write in the missing numbers.

Number Sense Word Problem There are 5 puppies in the basket. Max puts 3 more puppies in. How many puppies are there in all? What do you know? There are _______ puppies in the basket. Max puts _______ more puppies in the basket. Write a number sentence to solve the problem. _______ + _______ = _______ puppies in all

Number Sense Subtraction Use the pictures below to solve the subtraction number sentences. (cross out the number of items subtracted ‘taken away’) 5 – 2 = _______ 4 – 3 = _______ 6 – 4 = _______

Number Sense Subtraction Complete the subtraction sentence using the stories below. Draw a picture if needed. There are 4 apples. Matt eats 0. How many are left? _______ - _______ = _______

Number Sense Subtraction Complete the subtraction sentence using the stories below. Draw a picture if needed. There are 4 plums. The children eat 4. How many are left? _______ - _______ = _______

Number Sense Subtraction Complete the subtraction sentence using the stories below. Draw a picture if needed. Lea has 6 bananas. The monkey takes 3. How many are left? _______ - _______ = _______

Graphing Reading Bar Graphs

Number Sense Adding Machine Make the In and Out machine work. Write the missing addend or sum.

Number Sense Adding Machine Make the In and Out machine work. Write the missing addend or sum. Create your own adding machine problem.

Number Sense Counting on Tens to Add Use the hundreds chart and add. Hundreds Chart

Number Sense Counting on Tens to Add Use the hundreds chart and add. Hundreds Chart

Number Sense Adding Two Digit Numbers with Regrouping Add Two-Digit Numbers

Number Sense Finding the Sum Add across. Add down. The sum is the same in both directions.

Number Sense Finding the Sum Add across. Add down. The sum is the same in both directions.

Number Sense Adding Two Digit Numbers with Regrouping Write the missing digit.

Problem Solving Too Much Information Cross out any information that you do not need. Then solve. In the park, 14 children play on the slides. 8 are boys and 6 are girls. 20 children play on the climbing tower. How many children play in the park? Draw or write to explain. _____________ children

Problem Solving Too Much Information Cross out any information that you do not need. Then solve. There are 12 children playing running games. 10 others play quiet board games. 3 teachers watch the children. How many children play? Draw or write to explain. _____________ children

Problem Solving Too Much Information Cross out any information that you do not need. Then solve. 11 children choose raisins as a snack. There are about 30 raisins in each box. The other 9 children have juice. How many children have snacks? Draw or write to explain. _____________ children