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
67 + 20 = ______
82 + 10 = ______
4 × 10 = ______
3 × 10 = ______
55 + 10 = ______
84 − 10 = ______
50 + 20 = ______
77 − 10 = ______
97 − 10 = ______
35 + 20 = ______
26 + 20 = ______
88 − 10 = ______
28 + 20 = ______
38 − 10 = ______
1 × 10 = ______
9 × 10 = ______
30 + 10 = ______
51 + 20 = ______
7 × 10 = ______
37 + 10 = ______
