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
17 + 20 = ______
9 × 10 = ______
86 + 10 = ______
83 + 20 = ______
34 + 20 = ______
79 + 10 = ______
42 − 10 = ______
33 + 10 = ______
52 − 10 = ______
58 + 10 = ______
7 × 10 = ______
1 × 10 = ______
46 − 10 = ______
27 + 20 = ______
69 + 20 = ______
56 + 10 = ______
62 + 10 = ______
35 − 10 = ______
82 − 10 = ______
8 × 10 = ______
