Abacus Contest

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# Abacus Contest - PowerPoint PPT Presentation

Abacus Contest . Word Knowledge. These words are root words that have had a suffix added to them. Can you pick out the suffixes?. Addition Subtraction Multiplication Division. Addi tion Subtrac tion Multiplica tion Divis ion. What are the root words?. add. subtraction. addition.

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## PowerPoint Slideshow about 'Abacus Contest' - Mercy

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Presentation Transcript

### Abacus Contest

Word Knowledge

These words are root words that have had a suffix added to them. Can you pick out the suffixes?
• Subtraction
• Multiplication
• Division
• Subtraction
• Multiplication
• Division
What are the root words?

subtraction

multiplication

calculation

subtract

multiply

calculate

These words have the /i/ sound spelled i

mistake

giggled

quilt

begin

division

Can you find the mathematics words and the words with the long e sound spelled ea?
• The showed thestudents how to do

teacher

subtraction.

• That game is played with
• a round and a game board.

multiplication

Can you identify the words with the /ow/ sound spelled ou?
• The players are breathing hard as they the ball.
• The pig wanted to go ,so he pushed on the door with his

bounce

outside

snout.

Can you identify the words with the /i/ sound spelled i ?
• easy to make a

when you are

a long

problem.

It

is

mistake

doing

division

Use Context Cluesto figure out the definition
• Gao Mai’s fingers flew back and forth over the smooth black beads of the abacus.
Use Context Cluesto figure out the definition
• During a few of her many timed drills, she was even faster than her father
• Every Friday, we do drills in math class. Thanks to all that practice, I am much faster at multiplying than I was before.
Use Context Cluesto figure out the definition

She knew Li Zhi loved practical jokes and could tell by her mischievous look that she might play one at any moment.

The mischievous boy put a frog in his sister’s shoe and laughed when she screamed.

Use Context Cluesto figure out the definition

Finally she wrote down the last answer, jumped from her seat, and collided with Li Zhi.

The bumper cars collided, giving their riders a jolt.

Use Context Cluesto figure out the definition
• First place in speed and accuracy, goes to Li Zhi, last year’s first-place winner, and also to Gao Mai, last year’s second-place winner.

Accuracy is important when you take a test. It’s a good idea to go back and fix any errors.

LET’S

REVIEW!!

Abacus-atoolusedto figure math problems by sliding counters

drills-exercises to increase your mental or physical skills.

mischievous- full of pranks and

teasing fun.

Collided- crashed

Accuracy-being without mistakes.

math

Abacus-atoolusedto figure __________ problems by sliding __________.

counters

drills-exercises to increase your _________ or ___________ skills.

mental

physical

pranks

mischievous- full of _________ and

teasing _______.

fun

crashed

Collided- __________

mistakes

Accuracy-being without __________.

GOOD JOB!
• NOW PLEASE TAKE OUT YOUR BOOKS FOR CLUES, PROBLEMS, AND WONDERINGS