G2 LTT. Mid-term Review

I am 6 ones and 2 tens.

Who am I?

• 6

• 62

• 26

• 8

Answer explanation

ones: hàng đơn vị

tens: hàng chục

What is double 9?

• 10

• 16

• 18

• 20

Answer explanation

double: gấp đôi

Which option is counting on in 1s?

• 10, 12, 13, 14, 15

• 50, 52, 54, 56, 58

• 25, 26, 27, 28, 29

• 30, 40, 50, 60, 70

Answer explanation

count on in 1s: đếm xuôi cách 1

Which option is counting back in 10s?

• 14, 24, 34, 44, 54

• 30, 31, 32, 33, 34

• 90, 89, 88, 87, 86

• 90, 80, 70, 60, 50

Answer explanation

count back in 10s: đếm ngược cách 10

Which number is even?

• 22

• 43

• 67

• 99

Answer explanation

even: chẵn

Which number is odd?

• 10

• 29

• 66

• 82

Answer explanation

odd: lẻ

What is the place value of digit 7 in number 78?

• tens

• ones

• 70

• 8

Answer explanation

place value: giá trị hàng

What is the place of digit 3 in number 73?

• tens

• ones

• 70

• 3

Answer explanation

place: hàng

What is double 4 and double 10?

• 8

• 28

• 14

• 20

Answer explanation

double: số gấp đôi

double 4 = 4 + 4 = 8

double 10 = 10 + 10 = 20

double 4 and double 10 = 8 + 20 = 28

Start at 45, count on in 1s, what number can you write in the qmark?

45, 46, ___, ___, ___, ?

• 49

• 50

• 51

• 52

Answer explanation

count on: đếm xuôi/ đếm tăng lên

count on in 1s: đếm tăng lên 1