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
84 + 20 = ______
98 − 10 = ______
82 + 20 = ______
28 − 10 = ______
61 + 10 = ______
28 + 20 = ______
32 + 10 = ______
72 + 10 = ______
47 + 10 = ______
68 − 10 = ______
46 − 10 = ______
1 × 10 = ______
40 + 20 = ______
88 + 10 = ______
9 × 10 = ______
3 × 10 = ______
49 + 10 = ______
17 + 20 = ______
80 − 10 = ______
8 × 10 = ______
