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Do with one prompt
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Can
or can not do with one or less prompts
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Comments |
1. Join |
Sandra had 8 pennies. George gave her 4 more. How
many pennies does Sandra have altogether? (8 + 4 = ?) |
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Sandra had 7 pennies. George gave her somemore.
Now Sandra has 13 pennies. How many did George give her? (7 + ?
= 13) |
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Sandra had some pennies. George gave her 6 more.
Now Sandra has 15 pennies. How many did Sandra have to start? (?
+ 6 = 15) |
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2. Separate |
Sandra had 11pennies. She gave 5 pennies to George.
How many pennies does Sandra have now? (11 - 5 = ?) |
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Sandra had 12 pennies. She gave some to George.
Now she has 9 pennies. How many did she give to George? |
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Sandra had some pennies. She gave 5 to George. Now
Sandra has 9 pennies left. How many pennies did Sandra have to begin
with? |
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3. Part-part whole |
George has 5 pennies and 10 pennies. How many coins
does he have? (5 + 10 = ?) |
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George has 13 pennies. Five pennies are in his right
hand and the rest are in his left. How many pennies are in his left
hand? |
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4. Compare |
George have 11pennies and Sandra has 8 pennies.
How many more pennies does George have than Sandra? (11 - 8 = ?
or 8 + ? = 11) |
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George have 13 pennies. Sandra has 9 pennies. How
many fewer pennies does Sandra have than George? (13 - 9 = ? or
9 + ? = 13) |
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Addition and Subtraction Whole Number
Calculation Algorithmic Scoring Guide
Level |
Level outcomes |
Comments |
1 |
- Counts on for values to 20
- Uses five and ten as anchors
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2 |
- Can tell one more and one less.
- Can tell two more and two less.
- Compose and decompose numbers to 20
- Mentally Adds and subtracts values to 20
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3 |
- Add and subtract from left to right by decomposing double digit numbers to tens and ones.
- Works with tens, then works with ones, and then adds tens and ones.
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4 |
- Adds on or subtracts from a two digit numer
- Mentally Adds and subtracts values to 100 including regrouping for addition and subtraction
- Adds and subtracts money values by composing and decomposing into coin values.
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5 |
- Constructs and deconstructs addition and subtraction problems to 10 000.
- Regroup with addition fairly easily
- Regrouping with subtraction is cumbersome with problems requiring multiple regroupings
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6 |
- Constructs and deconstructs addition and subtraction problems of any size with and without regrouping until confidence in the accuracy of the solution is attained.
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Dr. Robert Sweetland's notes
[Home: homeofbob.com & schoolofbob.com ]
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