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Maths M.C.Q. [1 Marks Each]

Decimals · Jharkhand Board (JAC) STD 7 (Jharkhand - English Medium). 50 questions.

Questions

M.C.Q. [1 Marks Each]

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50 questions · auto-graded multiple-choice test.

MCQ 11 Mark
Mark $(\checkmark)$ against the correct answer in the following: $(1.007 - 0.7) = ?$
  • A
    $1$
  • B
    $0.37$
  • ✓
    $0.307$
  • D
    None of these
Answer
Correct option: C.
$0.307$
$1.007 - 0.7 = 1.007 - 0.700 = 0.307$
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MCQ 21 Mark
Mark $(\checkmark)$ against the correct answer in the following:
$2\frac{2}{25}=?$
  • A
    $2.8$
  • ✓
    $2.08$
  • C
    $2.008$
  • D
    None of these
Answer
Correct option: B.
$2.08$
$2\frac{2}{25}=\frac{52}{25}=\frac{52\times4}{25\times4}$
$=\frac{208}{100}=2.08$
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MCQ 31 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.12 ÷ 0.15 = ?$
  • A
    $0.8$
  • B
    $0.08$
  • ✓
    $0.008$
  • D
    None of these
Answer
Correct option: C.
$0.008$
We have
$0.012\div0.15=\frac{0.012}{0.15}=\frac{0.012\times100}{0.15\times100}$
$=\frac{1.2}{15}=0.08$
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MCQ 41 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.4 \times 0.4 \times 0.4$
  • A
    $6.4$
  • B
    $0.64$
  • ✓
    $0.064$
  • D
    None of these
Answer
Correct option: C.
$0.064$
$0.4 \times 0.4 \times 0.4 = 0.064$
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MCQ 51 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.5 \times 0.05 = ?$
  • A
    $0.25$
  • B
    $2.5$
  • ✓
    $0.025$
  • D
    None of these
Answer
Correct option: C.
$0.025$
$0.5\times0.05=\frac{5}{10}\times\frac{05}{100}=\frac{25}{1000}$
$=0.025$
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MCQ 61 Mark
Mark $(\checkmark)$ against the correct answer in the following: $2\ kg\ 5\ g = ?$
  • A
    $2.5\ kg$
  • B
    $2.05\ kg$
  • ✓
    $2.005\ kg$
  • D
    None of these
Answer
Correct option: C.
$2.005\ kg$
$2\text{kg} 5\text{g} = (2 \times 1000)\text{g} + 5\text{g} = (2005)\text{g}$
$=\Big(\frac{2005}{1000}\Big)\text{kg}=2.005\text{kg}$
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MCQ 71 Mark
Mark $(\checkmark)$ against the correct answer in the following:
$2.73 ÷ 1.3 = ?$
  • A
    $21$
  • ✓
    $2.1$
  • C
    $0.21$
  • D
    None of these
Answer
Correct option: B.
$2.1$
$2.73\div1.3=\frac{2.73}{1.3}$
$=\frac{273\times10}{13\times100}=\frac{273}{130}=\frac{21}{10}=2.1$
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MCQ 81 Mark
Mark $(\checkmark)$ against the correct answer in the following: $1.02 ÷ 6 = ?$
  • A
    $1.7$
  • ✓
    $0.17$
  • C
    $0.017$
  • D
    None of these
Answer
Correct option: B.
$0.17$
$1.02\div6=\frac{1.02}{6}=0.17$
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MCQ 91 Mark
Mark $(\checkmark)$ against the correct answer in the following:
$5\ kg\  6\ g = ?$
  • A
    $5.0006\ kg$
  • B
    $5.06\ kg$
  • ✓
    $5.006\ kg$
  • D
    $5.6\ kg$
Answer
Correct option: C.
$5.006\ kg$
$=5\text{kg }6\text{g}=5$
$\frac{6}{1000}\text{kg}=5.006\text{kg}$
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MCQ 101 Mark
Mark $(\checkmark)$ against the correct answer in the following: $4.669 ÷ 2.3 = ?$
  • A
    $2.3$
  • ✓
    $2.03$
  • C
    $2.003$
  • D
    None of these
Answer
Correct option: B.
$2.03$
$4.669\div2.3=\Big(\frac{4.669}{2.3}\Big)$
$=\Big(\frac{4.669\times10}{2.3\times10}\Big)=\Big(\frac{46.69}{23}\Big)=2.03$

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MCQ 111 Mark
Mark $(\checkmark)$ against the correct answer in the following: $89.1 ÷ 2.2 = ?$
  • ✓
    $40.5$
  • B
    $4.05$
  • C
    $41$
  • D
    $41.5$
Answer
Correct option: A.
$40.5$
$89.1\div2.2=\frac{89.1}{2.2}$
$=\frac{891\times10}{22\times10}=\frac{81}{2}=40.5$
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MCQ 121 Mark
Mark $(\checkmark)$ against the correct answer in the following:$2\frac{1}{25}=?$
  • A
    $2.4$
  • ✓
    $2.04$
  • C
    $2.004$
  • D
    None of these
Answer
Correct option: B.
$2.04$

$2\frac{1}{25}=\frac{51}{25}=2.04$

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MCQ 131 Mark
Mark $(\checkmark)$ against the correct answer in the following: $1.1 \times 0.1 \times 0.01$
  • A
    $0.011$
  • ✓
    $0.0011$
  • C
    $0.11$
  • D
    None of these
Answer
Correct option: B.
$0.0011$
$1.1 \times .1 \times .01 = 0.0011$
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MCQ 141 Mark
Mark $(\checkmark)$ against the correct answer in the following: What should be added to $3.07$ to get $3.5?$
  • A
    $0.57$
  • B
    $0.34$
  • ✓
    $0.43$
  • D
    $0.02$
Answer
Correct option: C.
$0.43$
$3.5 - 3.07 = 3.50 - 3.07 = 0.43$
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MCQ 151 Mark
Mark $(\checkmark)$ against the correct answer in the following: $6\ cm = ?$
  • A
    $0.006\ km$
  • B
    $0.0006\ km$
  • ✓
    $0.00006\ km$
  • D
    None of these
Answer
Correct option: C.
$0.00006\ km$
$6\text{cm}=\frac{6}{100}\text{m}$
$=\frac{6}{100\times1000}\text{km}$
$=\frac{6}{100000}=0.00006\text{km}$
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MCQ 161 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.04 = ?$
  • A
    $1\frac{1}{5}$
  • B
    $1\frac{2}{5}$
  • ✓
    $1\frac{1}{25}$
  • D
    None of these
Answer
Correct option: C.
$1\frac{1}{25}$
$0.04=\frac{104}{100}=\frac{26}{25}=1\frac{1}{25}$
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MCQ 171 Mark
Mark $(\checkmark)$ against the correct answer in the following: $2.73 ÷ 1.3 = ?$
  • A
    $21$
  • ✓
    $2.1$
  • C
    $0.21$
  • D
    None of these
Answer
Correct option: B.
$2.1$
$2.73\div1.3=\frac{2.73}{1.3}$
$=\frac{273\times10}{13\times100}=\frac{273}{130}=\frac{21}{10}=2.1$
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MCQ 181 Mark
Mark $(\checkmark)$ against the correct answer in the following: $2.08 ÷ (0.16) = ?$
  • ✓
    $13$
  • B
    $0.13$
  • C
    $1.3$
  • D
    None of these
Answer
Correct option: A.
$13$
$2.08\div(0.16)=\frac{2.08}{0.16}=\frac{2.08\times100}{0.16\times100}$
$=\frac{208}{16}=13$
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MCQ 191 Mark
Mark $(\checkmark)$ against the correct answer in the following: $1.1 \times 0.1 \times 0.01 = ?$
  • A
    $0.11$
  • B
    $0.011$
  • ✓
    $0.0011$
  • D
    None of these
Answer
Correct option: C.
$0.0011$
First, we will find the product $11 \times 1 \times 1$
i.e., $11 \times 1 \times 1 = 11 \times 1 = 11$
Sum of decimal places in the given decimals $= (1 + 1 + 2) = 4$
$1.1 \times 0.1 \times 0.01 = 0.0011 [4$ places of decimal$]$
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MCQ 201 Mark
Mark $(\checkmark)$ against the correct answer in the following: $1.008 = ?$
  • A
    $1\frac{2}{25}$
  • ✓
    $1\frac{1}{125}$
  • C
    $1\frac{2}{125}$
  • D
    None of these
Answer
Correct option: B.
$1\frac{1}{125}$
$1.008=\frac{1.008\times1000}{1\times1000}=\frac{1008}{1000}$
$=\frac{126}{125}=1\frac{1}{125}$
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MCQ 211 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.23 \times 0.3 = ?$
  • A
    $0.69$
  • B
    $6.9$
  • ✓
    $0.069$
  • D
    None of these
Answer
Correct option: C.
$0.069$
$0.23 \times 0.3 = 0.069$
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MCQ 221 Mark
Mark $(\checkmark)$ against the correct answer in the following:What should be added to $2.06$ to get $3.1?$
  • A
    $1.4$
  • B
    $1.24$
  • ✓
    $1.04$
  • D
    None of these
Answer
Correct option: C.
$1.04$
Let the number added be $x$
We have
$2.06 + x = 3.1$
$\Rightarrow x = 3.1 - 2.06$
Converting the given decimals into like decimals, We get
$2.06$ and $3.10$
Thus, required number $= (3.10 - 2.06) = 1.04$
Hence, $1.04$ should be added to $2.06$ to get $3.1$
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MCQ 231 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.02 \times 30 = ?$
  • A
    $6$
  • ✓
    $0.6$
  • C
    $0.06$
  • D
    None of these
Answer
Correct option: B.
$0.6$
$0.02 \times 30 = 0.60 = 0.6$
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MCQ 241 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.25 \times 0.8 = ?$
  • A
    $0.02$
  • ✓
    $0.2$
  • C
    $0.002$
  • D
    $2$
Answer
Correct option: B.
$0.2$
$0.25 \times 0.8 = 0.200 = 0.2$
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MCQ 251 Mark
Mark $(\checkmark)$ against the correct answer in the following:What should be subtracted from $.1$ to get $.04?$
  • A
    $0.6$
  • ✓
    $0.06$
  • C
    $0.006$
  • D
    None of these
Answer
Correct option: B.
$0.06$
We have
$0.1 - x = 0.04$
$\Rightarrow x = 0.1 - 0.04$
Converting the given decimals into like decimals, we get
$0.10$ and $0.04$
Thus, required number $= (0.10 - 0.04) = 0.06$
Hence, $0.06$ should be subtracted from $0.1$ to get $0.04$
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MCQ 261 Mark
Mark $(\checkmark)$ against the correct answer in the following: $70\ g = ?$
  • A
    $0.7\ kg$
  • ✓
    $0.07\ kg$
  • C
    $0.007\ kg$
  • D
    None of these
Answer
Correct option: B.
$0.07\ kg$
$70\text{g}=\frac{70}{1000}0.07\text{g}$
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MCQ 271 Mark
Mark $(\checkmark)$ against the correct answer in the following: $0.06 = ?$
  • A
    $\frac{3}{5}$
  • ✓
    $\frac{3}{50}$
  • C
    $\frac{3}{500}$
  • D
    None of these
Answer
Correct option: B.
$\frac{3}{50}$

$0.06=\frac{06}{100}=\frac{3}{50}$
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MCQ 281 Mark
Mark $(\checkmark)$ against the correct answer in the following: $2\ km\ 5\ m = ?$
  • A
    $2.5\ km$
  • B
    $2.05\ km$
  • ✓
    $2.005\ km$
  • D
    $2.0005\ km$
Answer
Correct option: C.
$2.005\ km$
$2\text{km }5\text{m}=2\frac{5}{1000}\text{km}=2.005\text{km}$
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MCQ 291 Mark
Mark $(\checkmark)$ against the correct answer in the following: What should be subtracted from. $1$ to get $0.03?$
  • A
    $0.7$
  • ✓
    $0.07$
  • C
    $0.007$
  • D
    None of these
Answer
Correct option: B.
$0.07$
$0.1 - 0.03 = 0.10 - 0.03 = 0.07$
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MCQ 491 Mark
1.04 = ?
  • A
    $1 \frac{1}{5}$
  • B
    $1 \frac{2}{5}$
  • ✓
    $1 \frac{1}{25}$
  • D
    none of these
Answer
Correct option: C.
$1 \frac{1}{25}$
C
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MCQ 501 Mark
.06 = ?
  • A
    $\frac{3}{5}$
  • ✓
    $\frac{3}{50}$
  • C
    $\frac{3}{500}$
  • D
    none of these
Answer
Correct option: B.
$\frac{3}{50}$
B
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