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
33 + 10 = ______
4 × 10 = ______
24 + 20 = ______
70 + 20 = ______
99 − 10 = ______
2 × 10 = ______
78 + 10 = ______
34 + 20 = ______
75 − 10 = ______
60 − 10 = ______
71 + 20 = ______
35 − 10 = ______
62 + 20 = ______
47 + 10 = ______
52 + 10 = ______
9 × 10 = ______
3 × 10 = ______
17 + 20 = ______
70 − 10 = ______
52 − 10 = ______
