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Grade 4 Math Diagnostic — Answer Key

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1
B — 6,245
3,456 + 2,789 = 6,245.
2
2,653
5,000 − 2,347 = 2,653.
3
A — 72
8 × 9 = 72.
4
B — 9
63 ÷ 7 = 9.
5
72
24 × 3 = 72.
6
B — 1/2
2/4 simplifies to 1/2.
7
2/3
1/3 + 1/3 = 2/3.
8
A — 1.2
0.7 + 0.5 = 1.2.
9
0.45
45/100 = 0.45.
10
B — 2,000
1 kg = 1,000 g, so 2 kg = 2,000 g.
11
21 cm²
7 × 3 = 21 cm².
12
C — obtuse
An obtuse angle is between 90° and 180°.
13
70
Subtract 10 each time: 80 − 10 = 70.
14
B — 56
7 × 8 = 56.
15
16
96 ÷ 6 = 16.
16
A — 4,000
382 is less than 500, so round down to 4,000.
17
60 pencils
12 × 5 = 60.
18
A — 12
20 ÷ 5 = 4, then 4 × 3 = 12.
19
3/4
1/2 = 2/4, so 2/4 + 1/4 = 3/4.
20
B — square-based pyramid
A square-based pyramid has 1 square base + 4 triangle faces = 5 faces.
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