CHALLENGE QUESTIONS Solve the following problems on another sheet of paper. 1.
Mrs. Patel goes to the supermarket. She wants to buy 10 kg of sugar. However, the sugar is sold in 1-kg, 2-kg, and 5-kg bags. List 5 ways that she can buy 10 kg of sugar.
1 kg
2 kg
5 kg
2.
X is a 2-digit number. The sum of all its digits is 9. The first digit is 3 more than the second digit. What is X?
3.
Rico keeps some birds and cats as pets. The total number of legs his animals have is 22. The number of cats is 1 more than the number of birds. How many cats and birds does he have?
4.
Clock A chimes every 2 minutes. Clock B chimes every 5 minutes. If the 2 clocks are timed together, how many times will they chime in 10 minutes?
5.
Jess has 3 bills of different values. The total value of these bills is $35. What bills does she have?
6.
Brianna has 2 watches that are not working well. Watch A is 4 hours fast. Watch B is 8 hours slow. What is the actual time in the morning when both watches show 12:00?
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CD-704679 SINGAPORE MATH Bindup 1AB TXT.indd 224
Singapore Math Level 1A & 1B
10/21/14 2:22 PM
