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
43 + 10 = ______
68 + 10 = ______
79 + 20 = ______
71 − 10 = ______
59 + 20 = ______
70 − 10 = ______
8 × 10 = ______
9 × 10 = ______
36 − 10 = ______
4 × 10 = ______
7 × 10 = ______
29 + 10 = ______
25 + 20 = ______
60 + 10 = ______
3 × 10 = ______
20 + 10 = ______
1 × 10 = ______
91 − 10 = ______
5 × 10 = ______
81 + 20 = ______
