This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. Important transitions occur at decade boundaries (29→30, 99→100) and in teen numbers (11-19). The stimulus shows a number sequence with a missing number: 18, 19, ____, 21. Choice A is correct because 20 fills the gap in the sequence 18, 19, ___, 21, marking a decade transition. Choice B is a common error where students confuse 10 with 20, mixing up teen and decade numbers; this happens because teen numbers have unusual names that don't match their structure. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Important transitions occur at decade boundaries (29→30, 99→100) and in teen numbers (11-19). The stimulus asks for the number that comes after 99. Choice B is correct because after 99 comes 100, entering the three-digit numbers. Choice A is a common error where students skip over 100 to 101, which happens because decade transitions require understanding place value. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. Important transitions occur at decade boundaries (29→30, 99→100) and in teen numbers (11-19). The stimulus shows a skip counting sequence by 10s: 80, 90, 100, ___. Choice B is correct because 110 comes next when counting by tens after 100. Choice D is a common error where students might jump to 120, skipping 110; this happens because skip counting requires understanding patterns in tens. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. The stimulus shows Maya counting stickers: 112, 113, 114, __. Choice A is correct because 115 comes immediately after 114 in the counting sequence. Choice B is a common error where students confuse the sequence and jump ahead, like to 124, which happens because the counting sequence to 120 is extensive and requires practice. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. The stimulus shows a skip counting sequence by 10s: 80, 90, 100, __. Choice B is correct because after 100 comes 110 when counting by 10s. Choice A is a common error where students revert to counting by 1s instead of 10s, which happens because skip counting requires understanding place value. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. The stimulus shows a number sequence with a missing number: 47, 48, 49, ___. Choice A is correct because 50 comes immediately after 49 in the counting sequence. Choice C is a common error where students repeat the previous number, like writing 49 again, which happens because the counting sequence to 120 is extensive and requires practice. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Important transitions occur at decade boundaries (29→30, 99→100) and in teen numbers (11-19). The stimulus asks for the number that comes after 19 in counting. Choice C is correct because after 19 comes 20, transitioning to the next decade. Choice A is a common error where students confuse teen numbers with decade numbers (19 vs 29), which happens because teen numbers have unusual names that don't match their structure. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. The stimulus asks for the number that comes before 60. Choice A is correct because 59 comes immediately before 60 in the counting sequence. Choice C is a common error where students confuse before with after, picking 61, which happens because the counting sequence to 120 is extensive and requires practice. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. The stimulus asks to write the numeral for the number word 'one hundred fifteen.' Choice C is correct because the numeral for one hundred fifteen is 115. Choice A is a common error where students reverse digits when writing numerals (115 vs 151), which happens because reversing digits is common when writing is still developing. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).

This question tests 1st grade ability to count to 120, starting at any number less than 120 (CCSS.1.NBT.1). Students must know the counting sequence from 1 to 120 and be able to start counting at any number within that range. Key skills include recognizing what number comes next, reading numerals accurately, writing numerals correctly, and representing quantities with written numerals. The stimulus asks to write the numeral for sixty-five. Choice B is correct because the numeral shown reads as 'sixty-five' which is 65. Choice A is a common error where students reverse digits when writing numerals (56 vs 65), which happens because reversing digits is common when writing is still developing. To help students: Use hundreds charts for visual reference; practice counting aloud daily, starting from different numbers; emphasize decade transitions explicitly (29→30, 99→100); provide practice reading and writing numerals with immediate feedback; use physical objects organized in groups of 10 to show quantities; teach teen numbers as 'ten and ___' (thirteen = 10 and 3); practice skip counting by 10s regularly; connect counting to real contexts (pages, calendar dates, collections).