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
78 − 10 = ______
4 × 10 = ______
86 − 10 = ______
8 × 10 = ______
52 + 20 = ______
58 − 10 = ______
5 × 10 = ______
58 + 10 = ______
31 + 20 = ______
21 − 10 = ______
66 + 20 = ______
3 × 10 = ______
51 + 10 = ______
55 + 20 = ______
6 × 10 = ______
50 + 10 = ______
69 + 10 = ______
1 × 10 = ______
82 − 10 = ______
14 + 10 = ______
