Grade 4 - Progress in Mathematics

444 Chapter 14

Find Missing Numbers

14-2

Find the number that nstands for in each equation.

1. 12
   5 n
   7 2. 4 n 8  3 3. 40  8  30 n


2. n 14  3  6 5. n 8  22
   17 6. 2  4  56 n

What number does astand for?

4 a 6  6

To solve:


Compute where possible. 4 a 6  6

4 a 12

Solve for the missing factor. a 12  4

a 3

Check. 4  3  6  6

12  12

What number does xstand for?

3  5 x 2

Compute. 3  5 x 2

15 x 2

Solve. 15  2 x

30 x

Check. 3  5  30  2

15  15

Hint

4 a 4 a

Think

The missing

factor is a.

Think

The missing

dividend is x.

2.0

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