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
29 + 20 = ______
87 − 10 = ______
82 − 10 = ______
3 × 10 = ______
32 − 10 = ______
82 + 10 = ______
8 × 10 = ______
4 × 10 = ______
1 × 10 = ______
5 × 10 = ______
15 + 20 = ______
80 + 20 = ______
51 + 20 = ______
9 × 10 = ______
14 + 10 = ______
21 + 10 = ______
64 + 20 = ______
19 + 10 = ______
48 − 10 = ______
72 − 10 = ______
