First, oral calculation.
8×7= 24÷4= 2×3×4= 16÷4= 9×3= 18÷6=
45÷9= 54÷9= 49+30= 60-9= 7×6= 8×6=
1 m-30cm = 2 1÷7×3= 2×9+3=
Fill in the blanks.
(1) The subtrahend is 6 and the minuend is 42. The difference is.
(2) Fill in meters or centimeters in ().
A classroom is 8 long and a pencil is 15.
(3) There is at most one 7 in 45, and if it is subtracted, it is exactly 5 and 7.
The 8 times of (4) is 48.32, which is 8 times larger than (4).
(5) Write two multiplication sentences with the number 12.
(6) Write two division formulas that use the multiplication formula of 9 to find the quotient.
(7) After a number is multiplied by 4 and 4 equals 24, this number is
Third, fill in the number in ().
( )×6= 18 2 1+ 18+( )=44
4. Fill in the blanks with "+","-","X" or "∫".
4〇6= 16〇8 1〇5= 15〇3 6〇4=8〇2
Five, column vertical calculation.
3×9= 62÷9= 90-(23+49)=
6. Calculate the following questions.
(42-7)÷7 36÷4+25
Seven, column calculation.
What is 8 times 7? (2) What is the sum of four sevens? How many 9s add up to 36?
How much is 275 more than 348? ⑤76 is more than what 39?
Eight, application questions.
(1) Class II (1) has 48 students, who are divided into 6 labor groups on average. How many people are in each group?
(2) Xiaohong, Xiaoying and Xiao Fang kicked shuttlecock. Xiaohong kicks 18, Xiaoying kicks 2 and Xiao Fang kicks 6. How many times does Xiaohong kick Xiao Fang at a time?
(3) 38 pieces of wood have been removed from a pile, leaving 75 pieces. How many pieces are there in this pile of wood?
(4) There are three bags of rice weighing 300 kg and two bags of flour weighing 120 kg in the canteen. How many kilograms are the three bags of rice heavier than the two bags of flour in the canteen?
Xiaoming has seven chickens, and the number of ducks is four times that of chickens. How many ducks does Xiaoming have? Ducks are only five fewer than geese. How many geese does Xiaoming have?
There are 8 peach trees beside the playground. How many willows are there?
(Draw a line under suitable conditions before answering)
There are two willows.
The number of peach trees is twice that of willow trees.
The number of willows is twice that of peach trees.