You're asking to
write each of the numbers in Question 1 in standard form.
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✔ What is “Standard Form”?
In mathematics (especially at this level),
standard form usually means
scientific notation, which is written as:
>
a × 10ⁿ
Where:
-
1 ≤ a < 10 (a is a number with one non-zero digit before the decimal point)
-
n is an integer (positive or negative)
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Let’s convert each number to standard form (scientific notation).
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📝 Question 1: Write each number in standard form
(a) 40000
→ Move decimal 4 places left → 4.0 × 10⁴
✔ Answer: 4 × 10⁴
(b) 2000000
→ 2.0 × 10⁶
✔ Answer: 2 × 10⁶
(c) 8000000
→ 8.0 × 10⁶
✔ Answer: 8 × 10⁶
(d) 7000
→ 7.0 × 10³
✔ Answer: 7 × 10³
(e) 100000000
→ 1.0 × 10⁸
✔ Answer: 1 × 10⁸
(f) 900
→ 9.0 × 10²
✔ Answer: 9 × 10²
(g) 250000
→ 2.5 × 10⁵
✔ Answer: 2.5 × 10⁵
(h) 1900
→ 1.9 × 10³
✔ Answer: 1.9 × 10³
(i) 54000000
→ 5.4 × 10⁷
✔ Answer: 5.4 × 10⁷
(j) 11000000
→ 1.1 × 10⁷
✔ Answer: 1.1 × 10⁷
(k) 89000
→ 8.9 × 10⁴
✔ Answer: 8.9 × 10⁴
(l) 3600000000
→ 3.6 × 10⁹
✔ Answer: 3.6 × 10⁹
(m) 43500
→ 4.35 × 10⁴
✔ Answer: 4.35 × 10⁴
(n) 91900000
→ 9.19 × 10⁷
✔ Answer: 9.19 × 10⁷
(o) 1230000000
→ 1.23 × 10⁹
✔ Answer: 1.23 × 10⁹
(p) 71120
→ 7.112 × 10⁴
✔ Answer: 7.112 × 10⁴
(q) 9804000
→ 9.804 × 10⁶
✔ Answer: 9.804 × 10⁶
(r) 471500
→ 4.715 × 10⁵
✔ Answer: 4.715 × 10⁵
(s) 55403
→ 5.5403 × 10⁴
✔ Answer: 5.5403 × 10⁴
(t) 2936000
→ 2.936 × 10⁶
✔ Answer: 2.936 × 10⁶
(u) 93508000
→ 9.3508 × 10⁷
✔ Answer: 9.3508 × 10⁷
(v) 333810000
→ 3.3381 × 10⁸
✔ Answer: 3.3381 × 10⁸
(w) 9800200000
→ 9.8002 × 10⁹
✔ Answer: 9.8002 × 10⁹
(x) 49300
→ 4.93 × 10⁴
✔ Answer: 4.93 × 10⁴
(y) 804000
→ 8.04 × 10⁵
✔ Answer: 8.04 × 10⁵
(z) 69702000000
→ 6.9702 × 10¹⁰
✔ Answer: 6.9702 × 10¹⁰
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🧠 Quick Tip for Standard Form:
1. Place the decimal after the first non-zero digit.
2. Count how many places you moved the decimal — that’s your power of 10.
- If you moved left → positive exponent
- If you moved right → negative exponent (not needed here, since all numbers are >1)
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✔ All done! You now have all numbers from (a) to (z) written in standard form (scientific notation).
Let me know if you’d like help with
Question 2 too — it says “Write each of the following as ordinary numbers”, which likely means converting from scientific notation back to normal numbers. Just say the word!
Parent Tip: Review the logic above to help your child master the concept of standard form math worksheet.
