PencilGoGrade 1 · Math · Number sense
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Grade 1 Math Worksheet - Building Confidence
Write the missing number.
5, , 15, 20, 25
10, , 30, 40, 50
10, , 14, 16, 18
22, 24, 26, , 30
15, 20, 25, 30,
5, 15, 25, , 45
30, 32, 34, , 38
25, 30, , 40, 45
4, 6, , 10, 12
30, 35, , 45, 50
A number pattern follows a rule: it goes up or down by the same amount each time. Spotting the rule is an early step toward algebra, and it makes skip counting and addition strategies much easier. On this grade 1 worksheet each line shows five numbers in a pattern with one missing, and your child works out how much the numbers change by and writes the missing one on the line.
Every pattern goes up by 1, 2, 5 or 10 from a friendly starting number such as 5, 10, 20 or 35. Support sheets use steps of 2, 5 and 10, standard sheets add steps of 1, and challenge sheets also count down. Ask your child to say how much the numbers change by from one to the next before filling in the gap.
Common Core standard: 1.OA.C.5
The pattern is 20, 25, ____, 35, 40. The numbers go up by 5 each time, so the missing number is 30.
Adding 1 to the last number instead of finding how much the pattern really changes by.
Look at the first two numbers. How much did it change by? Use that for the gap.
Adding 1 to the last number instead of finding how much the pattern really changes by.
Look at the first two numbers. How much did it change by? Use that for the gap.
Yes. All 6 printable versions on this page are free to download and print, with no account needed.
Similar: Count, Read, and Write to 120 · Tens and Ones
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