Term 1 review
Answers are for parents and teachers.
1
Write 25.07 in expanded form and round it to the nearest tenth.
20 + 5 + 0.07. Rounded to the nearest tenth: 25.1.
2
Sara and Salma visit their grandmother, Sara every 9 days and Salma every 12 days. They are both there today. After how many days are they both there again?
Multiples of 12: 12, 24, 36, and 36 = 9 × 4. The LCM of 9 and 12 is 36, so after 36 days.
3
Multiply 4,368 × 25 and divide 5,100 ÷ 15.
4,368 × 25 = 109,200 and 5,100 ÷ 15 = 340.
4
Work out 6.3 ÷ 0.9 and 0.8 × 0.25.
63 ÷ 9 = 7 and 8 × 25 = 200, so 0.8 × 0.25 = 0.2.
5
Work out 2 × [(18 − 6) ÷ 3 + 5] and write a rule for 5, 11, 17, 23.
18 − 6 = 12; 12 ÷ 3 = 4; 4 + 5 = 9; 2 × 9 = 18. The rule of the pattern is add 6.