Addition
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Addition to 1,000 without crossing tens or hundreds
Addition to 1,000 without crossing tens or hundreds
Addition to 1,000 using standard algorithm with regrouping
Addition to 1,000 using standard algorithm with regrouping
Estimated and exact sum with decimal numbers with 3 decimal places
Estimated and exact sum with decimal numbers with 3 decimal places
Estimated and exact sum with decimal numbers with 1 and 2 decimal places
Estimated and exact sum with decimal numbers with 1 and 2 decimal places
Estimated and exact sum with decimal numbers with 1 or 2 decimal places
Estimated and exact sum with decimal numbers with 1 or 2 decimal places
Addition with decimal numbers with 1, 2, or 3 decimal places
Addition with decimal numbers with 1, 2, or 3 decimal places
Addition with decimal numbers with 3 decimal places
Addition with decimal numbers with 3 decimal places
Addition with decimal numbers with 1 and 2 decimal places
Addition with decimal numbers with 1 and 2 decimal places
Addition with decimal numbers with 1 or 2 decimal places
Addition with decimal numbers with 1 or 2 decimal places
Addition to 1,000 with three or more random numbers
Addition to 1,000 with three or more random numbers
Addition to 1,000 using grouping with three or more addends
Addition to 1,000 using grouping with three or more addends
Addition to 1,000 by splitting the second addend into hundreds, tens, and ones
Addition to 1,000 by splitting the second addend into hundreds, tens, and ones
Addition to 1,000 with three or more simple numbers
Addition to 1,000 with three or more simple numbers
Addition to 1,000 by counting, with hundreds and tens
Addition to 1,000 by counting, with hundreds and tens
Addition to 100 by tens and ones using addends >10
Addition to 100 by tens and ones using addends >10
Addition to 50 making tens with second addends >10
Addition to 50 making tens with second addends >10
Addition to 20 with one more using an addition table
Addition to 20 with one more using an addition table
Addition with decimal numbers up to the hundredths place