SEAMO 2022 — Paper A — Grade 1–2

Question 1

Find $9+99+999$.

$1107$
$1108$
$1109$
$1110$
None of the above

Question 2

Find the missing number in Figure $3$.

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Question 3

Find the missing numbers: $1,2,4,7,11,\square,\square,29,37,\ldots$.

$15,21$
$16,22$
$16,23$
$15,22$
$17,24$

Question 4

Find the shaded area in $\text{cm}^2$.

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$4$
$6$
$8$
$10$
$12$

Question 5

A farm has $18$ chickens and rabbits with $58$ legs altogether. How many rabbits are there?

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$8$
$9$
$10$
$11$
$12$

Question 6

Each figure consists of six identical small rectangles as shown. Perimeter is the total outline length. Which statement is true?

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Figures $1$ and $4$ have equal perimeter.
Figures $2$ and $3$ have equal perimeter.
Figure $1$ has the largest perimeter.
Figure $3$ has the largest perimeter.
Figure $4$ has the largest perimeter.

Question 7

Mark sees the mirror reflection of a clock. What is the actual time?

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$2{:}35\text{ pm}$
$3{:}15\text{ pm}$
$4{:}15\text{ pm}$
$4{:}45\text{ pm}$
None of the above

Question 8

How many squares are there altogether?

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$15$
$19$
$23$
$24$
$25$

Question 9

Evaluate $1-2+3-4+5-6+\cdots-20+21$.

$11$
$13$
$15$
$17$
$21$

Question 10

Find the three-digit number $\overline{ABC}$ satisfying $\overline{AA}+\overline{BB}+\overline{CC}=\overline{ABC}$.

$196$
$197$
$198$
$199$
$200$

Question 11

How many shortest directed paths are there from A to B?

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Question 12

The dates of all Wednesdays in a month sum to $66$. What weekday is the first of that month?

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Monday
Tuesday
Wednesday
Thursday
Friday

Question 13

Find the first number in the chain: add $6$, multiply by $6$, subtract $6$, divide by $6$, to obtain $6$.

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Question 14

A bag has $5$ black, $3$ orange and $4$ red balls. Without looking, how many must Shawn draw to guarantee at least one of every colour?

$8$
$9$
$10$
$11$
$12$

Question 15

There are five steps. Chatdanai can climb one or two at a time. In how many ways can he reach the top?

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$7$
$8$
$9$
$10$
$12$

Question 16

A teacher gives each student $7$ sweets and has $3$ left. If she gives each $8$, she needs $5$ more. How many sweets does she have?

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$58$
$59$
$60$
$61$
$62$

Question 17

Find $A$ in Figure $3$.

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Question 18

Insert operations in $3\;\square\;3\;\square\;3\;\square\;3=7$, from left to right.

$-\;+\;\times$
$+\;-\;+$
$\times\;\times\;\div$
$+\;+\;\div$
$-\;-\;\div$

Question 19

Given square $+$ triangle $+$ circle $=48$, square $+$ two triangles $=47$, and two squares $+$ triangle $=46$, find the circle.

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$15$
$16$
$17$
$18$
$20$

Question 20

The object consists of eight cubes. If all its exposed surfaces are painted yellow, how many cubes have exactly four painted faces?

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