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
79 + 10 = ______
11 + 20 = ______
2 × 10 = ______
6 × 10 = ______
31 + 20 = ______
92 − 10 = ______
9 × 10 = ______
86 + 10 = ______
93 − 10 = ______
42 − 10 = ______
97 − 10 = ______
3 × 10 = ______
44 + 20 = ______
94 − 10 = ______
79 − 10 = ______
27 − 10 = ______
4 × 10 = ______
48 − 10 = ______
72 + 10 = ______
43 − 10 = ______
