HOT RODS
ADD IT UP!
KNOCK IT OFF!
SIGN OF THE TIMES
(UNDERCOVER NUMBERS)
100

If you add two red rods to this rod combination, you will get the value of two orange rod.

What are 2 brown rods?

100

I am 5 more than 15+15.

What is 35?

100

The sum of 1,000,000 - 0.

What is 1,000,000 (One Million)?

100

1,000,000 x 0.

What is 0?

100

20 + (20-20)

What is 20?

200

Lock-and-Key: Two outer-rods are orange; purple is the lock, and I am the key.

What is the dark-green rod?

200

The sum of 65+35.

What is 100?

200

30-15

What is 15?

200

The sum of five of the 2's and two of the 5's.

What is 20?

200

30 - (10+10)

What is 10?

300

A four-rod combination (same color) that equal two orange rods.

What are four yellow rods? 

300

Add this number to 75, and you will get a sum of 100.

What is 25?

300

Our class has 23 students. If we remove 4 students, how many students will remain?

What is 19?

300

Five of the 7's.

What is 35?

300
22 + (10+12)

What is 44?

400

Fractions: This color rod is one-half of eight.

What is the purple rod?

400

The sum is 50 more than 50+50.

What is 150?

400

Five less than 17+13.

What is 25?

400

Three of the 7's + Two of the 8's

What is 37?

400

(15+10) - (20+5)

What is 0?

500

Fractions: These color rods are two-fourth of sixteen (16).

What are two purple rods?

500

It is sum of the number of students in 2A (22), 2B (23) and 2C (24).

What is 69?

500

Twenty less than 60+60.

What is 100?

500

Ten of the 10's + Five of the 10's

What is 150?

500

100 - (5x10)

What is 50?