Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
4 × 10 = ______
8 × 10 = ______
19 + 20 = ______
9 × 10 = ______
1 × 10 = ______
70 − 10 = ______
83 + 10 = ______
45 + 10 = ______
13 + 10 = ______
77 − 10 = ______
11 + 20 = ______
45 − 10 = ______
59 + 20 = ______
6 × 10 = ______
78 + 20 = ______
85 + 20 = ______
3 × 10 = ______
62 + 20 = ______
53 − 10 = ______
86 + 10 = ______
