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
81 + 20 = ______
99 − 10 = ______
7 × 10 = ______
75 + 20 = ______
80 + 20 = ______
82 + 10 = ______
3 × 10 = ______
26 − 10 = ______
45 + 10 = ______
15 + 20 = ______
11 + 20 = ______
82 − 10 = ______
2 × 10 = ______
64 + 10 = ______
42 + 10 = ______
95 − 10 = ______
34 + 10 = ______
96 − 10 = ______
51 + 10 = ______
43 + 10 = ______
