Grade 2 · Standard, Word & Expanded Form
Number Forms Observatory


OBSERVATION 1 OF 5
Match the word form and expanded form with 247.
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Standard form Locked clue Word form Turn the two open dials until all three forms show the same number.
Learn the math: Standard, Word & Expanded Form to 1,000
Standard, word, and expanded forms name the same quantity. Zero can hold an empty place in standard form.
A worked example
406 can be written four hundred six or 400 + 6. It has four hundreds, no tens, and six ones.
Keep in mind while you play
Do not drop a zero from the standard number when a place is empty.
About Number Forms Observatory
A free Grade 2 math game for practicing standard, word & expanded form to 1,000. No account or download is needed.
Learning area: Numbers & counting · Number Forms to 1,000.
Difficulty: 2 · Practice within Grade 2. Apply a skill with more choices, larger numbers or extra steps.
Next in this learning areaComet Number Compare2 · Practice→What to do
Read the locked number form. Turn the other two observatory dials until the standard, word, and expanded forms all represent the same number.
Choose an activity that fits your learner. Grade labels are a guide; adults can help with the instructions.
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