South Dakota (2027–28) grade 1 math worksheets
Every South Dakota 2027–28 grade 1 math standard by its own code, with the printable sheets that practise it: 35 of 35 have sheets. New problems every time, answer keys and a one-page guide for grown-ups. Free, no sign-up.
Numbers & operations
- 1.N.1Count to 120 by tens.Counting back and by tens · Counting to 120
- 1.N.2Count forward and backward from any number within 120.Counting back and by tens · Counting to 120
- 1.N.3Read, write, and recognize numbers 0 to 120.Counting to 120
- 1.N.4Break two-digit numbers into tens and ones and put them back together.Tens and ones
- 1.N.5Show two-digit numbers with drawings, ten frames, cubes, or base-ten blocks.Tens and ones
- 1.N.6Count up to 120 objects by grouping them in tens and ones.Counting to 120 · Tens and ones
- 1.N.7Compare two two-digit numbers by tens and ones using <, >, =.Comparing two-digit numbers
Operations & algebraic thinking
- 1.OA.1See counting on as adding and counting back as subtracting.Counting on and back
- 1.OA.2Use order, grouping, and adding-zero properties to add within 20.Turn-around and grouping facts
- 1.OA.3Add and subtract within 20 with objects, drawings, number lines, or equations with unknowns.Adding within 20 · Subtracting within 20 · Missing numbers
- 1.OA.4Solve add and subtract story problems within 20, including three addends.Story problems within 20 · Adding three numbers
- 1.OA.5Add or subtract multiples of 10 to or from a number within 100.Adding within 100 · Subtracting tens
- 1.OA.6Add a two-digit and a one-digit number, with or without regrouping.Adding within 100
- 1.OA.7Subtract a one-digit number from a two-digit number, with or without regrouping.Adding and subtracting within 100 (Grade 2)
- 1.OA.8Subtract multiples of 10 from multiples of 10 between 10 and 90.Subtracting tens
- 1.OA.9Use addition and subtraction as opposites to write related equations within 20.Fact families
- 1.OA.10Use the meaning of the equal sign to tell if equations are true or false.True or false equations
- 1.OA.11Find the unknown number in any position of an add or subtract equation.Missing numbers
Measurement
- 1.M.1Order three objects by length and compare two lengths using a third object.Ordering by length
- 1.M.2Measure length by lining up same-size units with no gaps or overlaps.Measuring with units
- 1.M.3Tell and write time to the hour and half hour on analog and digital clocks.Time to the hour and half hour
- 1.M.4Name pennies, nickels, dimes, and quarters and know their values.Coins and bills
- 1.M.5Find the value of mixed pennies, nickels, and dimes up to a dollar; write cents.Coins and bills · Counting money (Grade 2)
- 1.M.6Organize, show, and interpret data with up to three categories.Tally charts and picture graphs
- 1.M.7Read and compare data shown in picture graphs, bar graphs, or tally charts.Tally charts and picture graphs
Geometry
- 1.G.1Tell defining shape features from features like color, size, or turn.Shape attributes
- 1.G.2Build and draw shapes that have given defining features.Shape attributes
- 1.G.3Make and name flat shapes, including trapezoids, half circles, and quarter circles.Putting shapes together
- 1.G.4Identify rectangular prisms as solids with rectangle faces.Naming solid shapes · Putting shapes together
- 1.G.5Split circles and rectangles into halves and fourths; more parts means smaller parts.Halves and fourths
Mathematical fluency
- 1.MF.1Add within 20 fluently.Adding within 20 · Subtracting within 20 · Facts within 20 (Grade 2)
- 1.MF.2Subtract within 20 fluently.Adding within 20 · Subtracting within 20 · Facts within 20 (Grade 2)
- 1.MF.3Know addition facts within 10 from memory.Adding within 20 · Subtracting within 20
- 1.MF.4Know subtraction facts within 10 from memory.Adding within 20 · Subtracting within 20
- 1.MF.5Find 10 more or 10 less than a two-digit number in your head.10 more and 10 less
Summaries are ours, in plain words. The same sheets by Common Core: Grade 1.
