Math Challenge

Estimates

100

46 x 39 ≈

What is 2000?

200

57 x 45 ≈

What is 3000?

300

67 x 69 ≈

What is 4900?

400

56 x 65 ≈

What is 4200?

500

456 x 566 ≈

What is 262200?

Exponents

100

4²

What is 16?

200

3³

What is 27?

300

4⁴

What is 256?

400

5⁴

What is 625?

500

6⁷

What is 279936?

Equations

100

4(6 + 7) =

What is 52?

200

5 + (76 -35)4 =

What is 169?

300

34 + [45-(4 x 9)] =

What is 43?

400

67[56 ÷ 8 + (56 - 4)] =

what is 3953?

500

2b+4=4b−4

b =?

What is 4?

Multiplication and Division

100

9 × 13 =

What is 117?

200

9 × 9 × 2 =

What is 162?

300

2 × 18 × 8 =

What is 288?

400

10 × 9 × 7 × 17 =

What is 10710?

500

17 × 2 × 20 × 15 × 4 =

What is 40800?