**Addition and Subtraction **

- Durga had some toy cars in a bag. She gave 8 of the cars to Shankar. After that, Durga had 10 toy cars. How many toy cars were in the bag before Durga gave them to Shankar?

A. 18 B. 12 C. 9 D. 2

**See more practice tests on comparisons**

- Numbers that go into the machine below are changed to a different number using a rule.

Which of the following could be the rule the machine uses?

A. Add 1 B. Add 3 C. Add 7 D. Add 10

- What number goes in the blank place to make the number sentence below true?

(42 + 35) + 26 = 42 + (□ + 26)

A. 35 B. 42 C. 77 D. 103

- The first four figures in a pattern are shown below:

If the pattern continues this way, how many blocks are needed to make 6^{th} step?

A. 15 B. 18 C. 21 D. 23

- The two number sentences shown below are true.

□ + □ = 6

□ + ∆ = 12

Which of the following values for ∆ and □ make both number sentences true?

A. ∆ = 3 and □ = 9 B. ∆ = 4 and □ = 8

C. ∆ = 15 and □ = 3 D. ∆ = 9 and □ = 3

__Answers__

(6)–A; (7)–C; (8)–A; (9)–C; (10)–D