Question
P2.MS.JC.18072068-A1
Find the following values without a calculator.
(Do not simplify the answer.)

  1.  45 + 45 = _____
  2. 25 + 15 = _____
  3. _____ + 410 = 1
  4. 910 + _____ = 1
4 m
(a)
∑

Click ∑ button first when a symbol is required. X

(b)
∑

Click ∑ button first when a symbol is required. X

(c)
∑

Click ∑ button first when a symbol is required. X

(d)
∑

Click ∑ button first when a symbol is required. X

Symbols

Enter the numerator and denominator


Enter value


2
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STUDENT

Primary 2 MENTAL SUMS P2.MS.JC.18072068

20 Jun 2024, 07:29 PM

Find the following values without a calculator.
(Do not simplify the answer.)

  1.  45 + 45 = _____
  2. 25 + 15 = _____
  3. _____ + 410 = 1
  4. 910 + _____ = 1
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